diff --git a/staging/kos/pkg/apis/network/types.go b/staging/kos/pkg/apis/network/types.go
index 8422b8375..28ddb836c 100644
--- a/staging/kos/pkg/apis/network/types.go
+++ b/staging/kos/pkg/apis/network/types.go
@@ -19,9 +19,207 @@ package network
 import (
 	"time"
 
+	fuzz "github.com/google/gofuzz"
+
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
+// ExtendedObjectMeta has extra metadata for an API object.
+// This is maintained by the server, clients can not modify it.
+type ExtendedObjectMeta struct {
+	// Writes identifies the latest write to each part of the object.
+	// +listType=map
+	// +listMapKey=section
+	// +optional
+	Writes WriteSet
+}
+
+// WriteSet represents a map from section to time
+type WriteSet []ObjectWrite
+
+// ObjectWrite describes a write to part of an object
+type ObjectWrite struct {
+	// Section identifies the part of the object that was written.
+	// Each type of object is broken down into a type-specific set of
+	// sections.
+	Section string
+
+	// ServerTime is the time when the write was recorded at the apiserver
+	ServerTime Timestamp
+}
+
+// GetServerWriteTime returns the server time of the write to the
+// given section, or zero if there was none.
+func (writes WriteSet) GetServerWriteTime(section string) Timestamp {
+	return writes.GetWrite(section).ServerTime
+}
+
+// GetWrite returns the write to the given section, or zero if there
+// was none.
+func (writes WriteSet) GetWrite(section string) ObjectWrite {
+	for _, wr := range writes {
+		if wr.Section == section {
+			return wr
+		}
+	}
+	return ObjectWrite{}
+}
+
+// SetWrite produces a revised slice that includes the given write.
+// The input is not side-effected.
+func (writes WriteSet) SetWrite(section string, serverTime Timestamp) WriteSet {
+	n := len(writes)
+	var i int
+	for i = 0; i < n && writes[i].Section != section; i++ {
+	}
+	if i == n {
+		return append(WriteSet{{Section: section, ServerTime: serverTime}}, writes...)
+	}
+	return append(append(WriteSet{{Section: section, ServerTime: serverTime}}, writes[:i]...), writes[i+1:]...)
+}
+
+// Diff produces the subset of the given writes that do not overlap
+// with the other writes
+func (writes WriteSet) Diff(others WriteSet) WriteSet {
+	ans := make(WriteSet, 0, len(writes))
+	for _, wr := range writes {
+		owr := others.GetWrite(wr.Section)
+		if owr == (ObjectWrite{}) {
+			ans = append(ans, wr)
+		}
+	}
+	return ans
+}
+
+// UnionLeft produces the union of the receiver and the other writes
+// that do not overlap with the receiver
+func (writes WriteSet) UnionLeft(others WriteSet) WriteSet {
+	ans := append(WriteSet{}, writes...)
+	for _, owr := range others {
+		wr := ans.GetWrite(owr.Section)
+		if wr == (ObjectWrite{}) {
+			ans = append(ans, owr)
+		}
+	}
+	return ans
+}
+
+// UnionMin produces the union of the two write sets, keeping the
+// earlier time for sections written in both sets
+func (writes WriteSet) UnionMin(others WriteSet) WriteSet {
+	ans := others.Diff(writes)
+	for _, wr := range writes {
+		owr := others.GetWrite(wr.Section)
+		owr.ServerTime = owr.ServerTime.Min(wr.ServerTime)
+		ans = append(ans, owr)
+	}
+	return ans
+}
+
+// UnionMax produces the union of the two write sets, keeping the
+// later time for sections written in both sets
+func (writes WriteSet) UnionMax(others WriteSet) WriteSet {
+	ans := others.Diff(writes)
+	for _, wr := range writes {
+		owr := others.GetWrite(wr.Section)
+		owr.ServerTime = owr.ServerTime.Max(wr.ServerTime)
+		ans = append(ans, owr)
+	}
+	return ans
+}
+
+// Timestamp records a time and is not truncated when marshalled.  A
+// Timestamp does not record a location but is unambiguous; it is the
+// number of nanoseconds since Jan 1, 1970 began in Greenwich, UK.
+type Timestamp struct {
+	// Nano is that number.
+	Nano int64
+}
+
+// NewTime returns a wrapped instance of the provided time
+func NewTimestamp(time time.Time) Timestamp {
+	// Time::UnixNano() is unambiguous
+	return Timestamp{time.UnixNano()}
+}
+
+// Date returns the Timestamp corresponding to the supplied parameters
+// by wrapping time.Date.
+func Date(year int, month time.Month, day, hour, min, sec, nsec int, loc *time.Location) Timestamp {
+	return Timestamp{time.Date(year, month, day, hour, min, sec, nsec, loc).UnixNano()}
+}
+
+// Now returns the current local time.
+func Now() Timestamp {
+	return Timestamp{time.Now().UnixNano()}
+}
+
+// IsZero returns true if the value is zero.
+func (ts Timestamp) IsZero() bool {
+	return ts.Nano == 0
+}
+
+// Sub returns the difference between the two timestamps
+func (ts Timestamp) Sub(us Timestamp) time.Duration {
+	return time.Duration(ts.Nano - us.Nano)
+}
+
+// Before reports whether the time instant t is before u.
+func (ts Timestamp) Before(us Timestamp) bool {
+	return ts.Nano < us.Nano
+}
+
+// Equal reports whether the time instant t is equal to u.
+func (ts Timestamp) Equal(us Timestamp) bool {
+	return ts.Nano == us.Nano
+}
+
+// Min returns the earlier of the two, receiver if tie
+func (ts Timestamp) Min(us Timestamp) Timestamp {
+	if us.Before(ts) {
+		return us
+	}
+	return ts
+}
+
+// Max returns the later of the two, receiver if tie
+func (ts Timestamp) Max(us Timestamp) Timestamp {
+	if ts.Before(us) {
+		return us
+	}
+	return ts
+}
+
+// Unix returns the local time corresponding to the given Unix time
+// by wrapping time.Unix.
+func Unix(sec int64, nsec int64) Timestamp {
+	return Timestamp{time.Unix(sec, nsec).UnixNano()}
+}
+
+// Fuzz satisfies fuzz.Interface.
+func (ts *Timestamp) Fuzz(c fuzz.Continue) {
+	if ts == nil {
+		return
+	}
+	// Allow for about 1000 years of randomness.
+	ts.Nano = time.Unix(c.Rand.Int63n(1000*365*24*60*60), c.Rand.Int63n(1000000000)).UnixNano()
+}
+
+var _ fuzz.Interface = &Timestamp{}
+
+// String formats the timestamp after shifting into UTC
+func (ts Timestamp) String() string {
+	utc := ts.Time().In(time.UTC)
+	return utc.Format(MetaTimestampFormat)
+}
+
+// MetaTimestampFormat is the format used by Timestamp::String()
+const MetaTimestampFormat = time.RFC3339Nano
+
+// Time converts to a time.Time
+func (ts Timestamp) Time() time.Time {
+	return time.Unix(0, ts.Nano)
+}
+
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 // NetworkAttachmentList is a list of NetworkAttachment objects.
@@ -60,6 +258,7 @@ type NetworkAttachmentSpec struct {
 	// and `mac`.
 	// PostCreateExec is immutable: attempts to update it will fail.
 	// +optional
+	// +patchStrategy=replace
 	PostCreateExec []string
 
 	// PostDeleteExec is a command to exec inside the attachment
@@ -73,6 +272,7 @@ type NetworkAttachmentSpec struct {
 	// deleted by then).  The same restrictions and variable
 	// expansions as for PostCreateExec are applied.
 	// +optional
+	// +patchStrategy=replace
 	PostDeleteExec []string
 }
 
@@ -126,16 +326,19 @@ type NetworkAttachmentStatus struct {
 type NetworkAttachmentErrors struct {
 	// IPAM holds errors about the IP Address Management for this attachment.
 	// +optional
+	// +patchStrategy=replace
 	IPAM []string
 
 	// Host holds errors from the node where this attachment is placed.
 	// +optional
+	// +patchStrategy=replace
 	Host []string
 }
 
 // ExecReport reports on what happened when a command was execd.
 type ExecReport struct {
 	// Command is the command whose execution is summarized by this ExecReport.
+	// +patchStrategy=replace
 	Command []string
 
 	// ExitStatus is the Linux exit status from the command, or a
@@ -150,7 +353,9 @@ type ExecReport struct {
 	StdErr string
 }
 
-// Equal tests whether the two referenced ExecReports say the same thing
+// Equiv tests whether the two referenced ExecReports say the same
+// thing within the available time precision.  The apiservers only
+// store time values with seconds precision.
 func (x *ExecReport) Equiv(y *ExecReport) bool {
 	if x == y {
 		return true
@@ -165,15 +370,30 @@ func (x *ExecReport) Equiv(y *ExecReport) bool {
 		x.StopTime.Time.Truncate(time.Second).Equal(y.StopTime.Time.Truncate(time.Second))
 }
 
+// The ExtendedObjectMeta sections for a NetworkAttachment
+const (
+	NASectionSpec       = "spec"
+	NASectionAddr       = "status.address"
+	NASectionImpl       = "status.impl"
+	NASectionExecReport = "status.execReport"
+)
+
 // +genclient
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
+// NetworkAttachment is about a Linux network interface connected to a
+// Subnet.  The sections recorded in ExtendedObjectMeta are: spec,
+// status.address, status.impl, status.execReport.
 type NetworkAttachment struct {
 	metav1.TypeMeta
 
 	// +optional
 	metav1.ObjectMeta
 
+	// `extendedMetadata` adds non-standard object metadata
+	// +optional
+	ExtendedObjectMeta
+
 	Spec NetworkAttachmentSpec
 
 	// +optional
@@ -219,15 +439,27 @@ type SubnetStatus struct {
 	Errors []string
 }
 
+// The ExtendedObjectMeta sections for a Subnet
+const (
+	SubnetSectionSpec   = "spec"
+	SubnetSectionStatus = "status"
+)
+
 // +genclient
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
+// Subnet is about an IP subnet on a virtual network.  For
+// ExtendedObjectMeta the sections are: spec, status.
 type Subnet struct {
 	metav1.TypeMeta
 
 	// +optional
 	metav1.ObjectMeta
 
+	// `extendedMetadata` adds non-standard object metadata
+	// +optional
+	ExtendedObjectMeta
+
 	Spec SubnetSpec
 
 	// +optional
diff --git a/staging/kos/pkg/apis/network/v1alpha1/types.go b/staging/kos/pkg/apis/network/v1alpha1/types.go
index 0f7b6365d..63dceee4b 100644
--- a/staging/kos/pkg/apis/network/v1alpha1/types.go
+++ b/staging/kos/pkg/apis/network/v1alpha1/types.go
@@ -19,9 +19,207 @@ package v1alpha1
 import (
 	"time"
 
+	fuzz "github.com/google/gofuzz"
+
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
+// ExtendedObjectMeta has extra metadata for an API object.
+// This is maintained by the server, clients can not modify it.
+type ExtendedObjectMeta struct {
+	// Writes identifies the latest write to each part of the object.
+	// +listType=map
+	// +listMapKey=section
+	// +optional
+	Writes WriteSet `json:"writes" protobuf:"bytes,1,name=writes"`
+}
+
+// WriteSet represents a map from section to time
+type WriteSet []ObjectWrite
+
+// ObjectWrite describes a write to part of an object
+type ObjectWrite struct {
+	// Section identifies the part of the object that was written.
+	// Each type of object is broken down into a type-specific set of
+	// sections.
+	Section string `json:"section" protobuf:"bytes,1,name=section"`
+
+	// ServerTime is the time when the write was recorded at the apiserver
+	ServerTime Timestamp `json:"serverTime" protobuf:"bytes,2,name=serverTime"`
+}
+
+// GetServerWriteTime returns the server time of the write to the
+// given section, or zero if there was none.
+func (writes WriteSet) GetServerWriteTime(section string) Timestamp {
+	return writes.GetWrite(section).ServerTime
+}
+
+// GetWrite returns the write to the given section, or zero if there
+// was none.
+func (writes WriteSet) GetWrite(section string) ObjectWrite {
+	for _, wr := range writes {
+		if wr.Section == section {
+			return wr
+		}
+	}
+	return ObjectWrite{}
+}
+
+// SetWrite produces a revised slice that includes the given write.
+// The input is not side-effected.
+func (writes WriteSet) SetWrite(section string, serverTime Timestamp) WriteSet {
+	n := len(writes)
+	var i int
+	for i = 0; i < n && writes[i].Section != section; i++ {
+	}
+	if i == n {
+		return append(WriteSet{{Section: section, ServerTime: serverTime}}, writes...)
+	}
+	return append(append(WriteSet{{Section: section, ServerTime: serverTime}}, writes[:i]...), writes[i+1:]...)
+}
+
+// Diff produces the subset of the given writes that do not overlap
+// with the other writes
+func (writes WriteSet) Diff(others WriteSet) WriteSet {
+	ans := make(WriteSet, 0, len(writes))
+	for _, wr := range writes {
+		owr := others.GetWrite(wr.Section)
+		if owr == (ObjectWrite{}) {
+			ans = append(ans, wr)
+		}
+	}
+	return ans
+}
+
+// UnionLeft produces the union of the receiver and the other writes
+// that do not overlap with the receiver
+func (writes WriteSet) UnionLeft(others WriteSet) WriteSet {
+	ans := append(WriteSet{}, writes...)
+	for _, owr := range others {
+		wr := ans.GetWrite(owr.Section)
+		if wr == (ObjectWrite{}) {
+			ans = append(ans, owr)
+		}
+	}
+	return ans
+}
+
+// UnionMin produces the union of the two write sets, keeping the
+// earlier time for sections written in both sets
+func (writes WriteSet) UnionMin(others WriteSet) WriteSet {
+	ans := others.Diff(writes)
+	for _, wr := range writes {
+		owr := others.GetWrite(wr.Section)
+		owr.ServerTime = owr.ServerTime.Min(wr.ServerTime)
+		ans = append(ans, owr)
+	}
+	return ans
+}
+
+// UnionMax produces the union of the two write sets, keeping the
+// later time for sections written in both sets
+func (writes WriteSet) UnionMax(others WriteSet) WriteSet {
+	ans := others.Diff(writes)
+	for _, wr := range writes {
+		owr := others.GetWrite(wr.Section)
+		owr.ServerTime = owr.ServerTime.Max(wr.ServerTime)
+		ans = append(ans, owr)
+	}
+	return ans
+}
+
+// Timestamp records a time and is not truncated when marshalled.  A
+// Timestamp does not record a location but is unambiguous; it is the
+// number of nanoseconds since Jan 1, 1970 began in Greenwich, UK.
+type Timestamp struct {
+	// Nano is that number.
+	Nano int64 `json:"nano" protobuf:"varint,1,name=nano"`
+}
+
+// NewTime returns a wrapped instance of the provided time
+func NewTimestamp(time time.Time) Timestamp {
+	// Time::UnixNano() is unambiguous
+	return Timestamp{time.UnixNano()}
+}
+
+// Date returns the Timestamp corresponding to the supplied parameters
+// by wrapping time.Date.
+func Date(year int, month time.Month, day, hour, min, sec, nsec int, loc *time.Location) Timestamp {
+	return Timestamp{time.Date(year, month, day, hour, min, sec, nsec, loc).UnixNano()}
+}
+
+// Now returns the current local time.
+func Now() Timestamp {
+	return Timestamp{time.Now().UnixNano()}
+}
+
+// IsZero returns true if the value is zero.
+func (ts Timestamp) IsZero() bool {
+	return ts.Nano == 0
+}
+
+// Sub returns the difference between the two timestamps
+func (ts Timestamp) Sub(us Timestamp) time.Duration {
+	return time.Duration(ts.Nano - us.Nano)
+}
+
+// Before reports whether the time instant t is before u.
+func (ts Timestamp) Before(us Timestamp) bool {
+	return ts.Nano < us.Nano
+}
+
+// Equal reports whether the time instant t is equal to u.
+func (ts Timestamp) Equal(us Timestamp) bool {
+	return ts.Nano == us.Nano
+}
+
+// Min returns the earlier of the two, receiver if tie
+func (ts Timestamp) Min(us Timestamp) Timestamp {
+	if us.Before(ts) {
+		return us
+	}
+	return ts
+}
+
+// Max returns the later of the two, receiver if tie
+func (ts Timestamp) Max(us Timestamp) Timestamp {
+	if ts.Before(us) {
+		return us
+	}
+	return ts
+}
+
+// Unix returns the local time corresponding to the given Unix time
+// by wrapping time.Unix.
+func Unix(sec int64, nsec int64) Timestamp {
+	return Timestamp{time.Unix(sec, nsec).UnixNano()}
+}
+
+// Fuzz satisfies fuzz.Interface.
+func (ts *Timestamp) Fuzz(c fuzz.Continue) {
+	if ts == nil {
+		return
+	}
+	// Allow for about 1000 years of randomness.
+	ts.Nano = time.Unix(c.Rand.Int63n(1000*365*24*60*60), c.Rand.Int63n(1000000000)).UnixNano()
+}
+
+var _ fuzz.Interface = &Timestamp{}
+
+// String formats the timestamp after shifting into UTC
+func (ts Timestamp) String() string {
+	utc := ts.Time().In(time.UTC)
+	return utc.Format(MetaTimestampFormat)
+}
+
+// MetaTimestampFormat is the format used by Timestamp::String()
+const MetaTimestampFormat = time.RFC3339Nano
+
+// Time converts to a time.Time
+func (ts Timestamp) Time() time.Time {
+	return time.Unix(0, ts.Nano)
+}
+
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 // NetworkAttachmentList is a list of NetworkAttachment objects.
@@ -172,15 +370,30 @@ func (x *ExecReport) Equiv(y *ExecReport) bool {
 		x.StopTime.Time.Truncate(time.Second).Equal(y.StopTime.Time.Truncate(time.Second))
 }
 
+// The ExtendedObjectMeta sections for a NetworkAttachment
+const (
+	NASectionSpec       = "spec"
+	NASectionAddr       = "status.address"
+	NASectionImpl       = "status.impl"
+	NASectionExecReport = "status.execReport"
+)
+
 // +genclient
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
+// NetworkAttachment is about a Linux network interface connected to a
+// Subnet.  The sections recorded in ExtendedObjectMeta are: spec,
+// status.address, status.impl, status.execReport.
 type NetworkAttachment struct {
 	metav1.TypeMeta `json:",inline"`
 
 	// +optional
 	metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 
+	// `extendedMetadata` adds non-standard object metadata
+	// +optional
+	ExtendedObjectMeta `json:"extendedMetadata,omitempty" protobuf:"bytes,4,opt,name=extendedMetadata"`
+
 	Spec NetworkAttachmentSpec `json:"spec" protobuf:"bytes,2,name=spec"`
 
 	// +optional
@@ -226,15 +439,27 @@ type SubnetStatus struct {
 	Errors []string `json:"errors,omitempty" protobuf:"bytes,2,opt,name=errors" patchStrategy:"replace"`
 }
 
+// The ExtendedObjectMeta sections for a Subnet
+const (
+	SubnetSectionSpec   = "spec"
+	SubnetSectionStatus = "status"
+)
+
 // +genclient
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
+// Subnet is about an IP subnet on a virtual network.  For
+// ExtendedObjectMeta the sections are: spec, status.
 type Subnet struct {
 	metav1.TypeMeta `json:",inline"`
 
 	// +optional
 	metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 
+	// `extendedMetadata` adds non-standard object metadata
+	// +optional
+	ExtendedObjectMeta `json:"extendedMetadata,omitempty" protobuf:"bytes,4,opt,name=extendedMetadata"`
+
 	Spec SubnetSpec `json:"spec" protobuf:"bytes,2,name=spec"`
 
 	// +optional
diff --git a/staging/kos/pkg/apis/network/v1alpha1/zz_generated.conversion.go b/staging/kos/pkg/apis/network/v1alpha1/zz_generated.conversion.go
index 09c41994f..c5b1cfa4f 100644
--- a/staging/kos/pkg/apis/network/v1alpha1/zz_generated.conversion.go
+++ b/staging/kos/pkg/apis/network/v1alpha1/zz_generated.conversion.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -45,6 +45,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*ExtendedObjectMeta)(nil), (*network.ExtendedObjectMeta)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta(a.(*ExtendedObjectMeta), b.(*network.ExtendedObjectMeta), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*network.ExtendedObjectMeta)(nil), (*ExtendedObjectMeta)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta(a.(*network.ExtendedObjectMeta), b.(*ExtendedObjectMeta), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*IPLock)(nil), (*network.IPLock)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1alpha1_IPLock_To_network_IPLock(a.(*IPLock), b.(*network.IPLock), scope)
 	}); err != nil {
@@ -125,6 +135,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*ObjectWrite)(nil), (*network.ObjectWrite)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_ObjectWrite_To_network_ObjectWrite(a.(*ObjectWrite), b.(*network.ObjectWrite), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*network.ObjectWrite)(nil), (*ObjectWrite)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_network_ObjectWrite_To_v1alpha1_ObjectWrite(a.(*network.ObjectWrite), b.(*ObjectWrite), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*Subnet)(nil), (*network.Subnet)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1alpha1_Subnet_To_network_Subnet(a.(*Subnet), b.(*network.Subnet), scope)
 	}); err != nil {
@@ -165,6 +185,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*Timestamp)(nil), (*network.Timestamp)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_Timestamp_To_network_Timestamp(a.(*Timestamp), b.(*network.Timestamp), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*network.Timestamp)(nil), (*Timestamp)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_network_Timestamp_To_v1alpha1_Timestamp(a.(*network.Timestamp), b.(*Timestamp), scope)
+	}); err != nil {
+		return err
+	}
 	return nil
 }
 
@@ -198,6 +228,26 @@ func Convert_network_ExecReport_To_v1alpha1_ExecReport(in *network.ExecReport, o
 	return autoConvert_network_ExecReport_To_v1alpha1_ExecReport(in, out, s)
 }
 
+func autoConvert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta(in *ExtendedObjectMeta, out *network.ExtendedObjectMeta, s conversion.Scope) error {
+	out.Writes = *(*network.WriteSet)(unsafe.Pointer(&in.Writes))
+	return nil
+}
+
+// Convert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta is an autogenerated conversion function.
+func Convert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta(in *ExtendedObjectMeta, out *network.ExtendedObjectMeta, s conversion.Scope) error {
+	return autoConvert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta(in, out, s)
+}
+
+func autoConvert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta(in *network.ExtendedObjectMeta, out *ExtendedObjectMeta, s conversion.Scope) error {
+	out.Writes = *(*WriteSet)(unsafe.Pointer(&in.Writes))
+	return nil
+}
+
+// Convert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta is an autogenerated conversion function.
+func Convert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta(in *network.ExtendedObjectMeta, out *ExtendedObjectMeta, s conversion.Scope) error {
+	return autoConvert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta(in, out, s)
+}
+
 func autoConvert_v1alpha1_IPLock_To_network_IPLock(in *IPLock, out *network.IPLock, s conversion.Scope) error {
 	out.ObjectMeta = in.ObjectMeta
 	if err := Convert_v1alpha1_IPLockSpec_To_network_IPLockSpec(&in.Spec, &out.Spec, s); err != nil {
@@ -268,6 +318,9 @@ func Convert_network_IPLockSpec_To_v1alpha1_IPLockSpec(in *network.IPLockSpec, o
 
 func autoConvert_v1alpha1_NetworkAttachment_To_network_NetworkAttachment(in *NetworkAttachment, out *network.NetworkAttachment, s conversion.Scope) error {
 	out.ObjectMeta = in.ObjectMeta
+	if err := Convert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta(&in.ExtendedObjectMeta, &out.ExtendedObjectMeta, s); err != nil {
+		return err
+	}
 	if err := Convert_v1alpha1_NetworkAttachmentSpec_To_network_NetworkAttachmentSpec(&in.Spec, &out.Spec, s); err != nil {
 		return err
 	}
@@ -284,6 +337,9 @@ func Convert_v1alpha1_NetworkAttachment_To_network_NetworkAttachment(in *Network
 
 func autoConvert_network_NetworkAttachment_To_v1alpha1_NetworkAttachment(in *network.NetworkAttachment, out *NetworkAttachment, s conversion.Scope) error {
 	out.ObjectMeta = in.ObjectMeta
+	if err := Convert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta(&in.ExtendedObjectMeta, &out.ExtendedObjectMeta, s); err != nil {
+		return err
+	}
 	if err := Convert_network_NetworkAttachmentSpec_To_v1alpha1_NetworkAttachmentSpec(&in.Spec, &out.Spec, s); err != nil {
 		return err
 	}
@@ -406,8 +462,37 @@ func Convert_network_NetworkAttachmentStatus_To_v1alpha1_NetworkAttachmentStatus
 	return autoConvert_network_NetworkAttachmentStatus_To_v1alpha1_NetworkAttachmentStatus(in, out, s)
 }
 
+func autoConvert_v1alpha1_ObjectWrite_To_network_ObjectWrite(in *ObjectWrite, out *network.ObjectWrite, s conversion.Scope) error {
+	out.Section = in.Section
+	if err := Convert_v1alpha1_Timestamp_To_network_Timestamp(&in.ServerTime, &out.ServerTime, s); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Convert_v1alpha1_ObjectWrite_To_network_ObjectWrite is an autogenerated conversion function.
+func Convert_v1alpha1_ObjectWrite_To_network_ObjectWrite(in *ObjectWrite, out *network.ObjectWrite, s conversion.Scope) error {
+	return autoConvert_v1alpha1_ObjectWrite_To_network_ObjectWrite(in, out, s)
+}
+
+func autoConvert_network_ObjectWrite_To_v1alpha1_ObjectWrite(in *network.ObjectWrite, out *ObjectWrite, s conversion.Scope) error {
+	out.Section = in.Section
+	if err := Convert_network_Timestamp_To_v1alpha1_Timestamp(&in.ServerTime, &out.ServerTime, s); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Convert_network_ObjectWrite_To_v1alpha1_ObjectWrite is an autogenerated conversion function.
+func Convert_network_ObjectWrite_To_v1alpha1_ObjectWrite(in *network.ObjectWrite, out *ObjectWrite, s conversion.Scope) error {
+	return autoConvert_network_ObjectWrite_To_v1alpha1_ObjectWrite(in, out, s)
+}
+
 func autoConvert_v1alpha1_Subnet_To_network_Subnet(in *Subnet, out *network.Subnet, s conversion.Scope) error {
 	out.ObjectMeta = in.ObjectMeta
+	if err := Convert_v1alpha1_ExtendedObjectMeta_To_network_ExtendedObjectMeta(&in.ExtendedObjectMeta, &out.ExtendedObjectMeta, s); err != nil {
+		return err
+	}
 	if err := Convert_v1alpha1_SubnetSpec_To_network_SubnetSpec(&in.Spec, &out.Spec, s); err != nil {
 		return err
 	}
@@ -424,6 +509,9 @@ func Convert_v1alpha1_Subnet_To_network_Subnet(in *Subnet, out *network.Subnet,
 
 func autoConvert_network_Subnet_To_v1alpha1_Subnet(in *network.Subnet, out *Subnet, s conversion.Scope) error {
 	out.ObjectMeta = in.ObjectMeta
+	if err := Convert_network_ExtendedObjectMeta_To_v1alpha1_ExtendedObjectMeta(&in.ExtendedObjectMeta, &out.ExtendedObjectMeta, s); err != nil {
+		return err
+	}
 	if err := Convert_network_SubnetSpec_To_v1alpha1_SubnetSpec(&in.Spec, &out.Spec, s); err != nil {
 		return err
 	}
@@ -503,3 +591,23 @@ func autoConvert_network_SubnetStatus_To_v1alpha1_SubnetStatus(in *network.Subne
 func Convert_network_SubnetStatus_To_v1alpha1_SubnetStatus(in *network.SubnetStatus, out *SubnetStatus, s conversion.Scope) error {
 	return autoConvert_network_SubnetStatus_To_v1alpha1_SubnetStatus(in, out, s)
 }
+
+func autoConvert_v1alpha1_Timestamp_To_network_Timestamp(in *Timestamp, out *network.Timestamp, s conversion.Scope) error {
+	out.Nano = in.Nano
+	return nil
+}
+
+// Convert_v1alpha1_Timestamp_To_network_Timestamp is an autogenerated conversion function.
+func Convert_v1alpha1_Timestamp_To_network_Timestamp(in *Timestamp, out *network.Timestamp, s conversion.Scope) error {
+	return autoConvert_v1alpha1_Timestamp_To_network_Timestamp(in, out, s)
+}
+
+func autoConvert_network_Timestamp_To_v1alpha1_Timestamp(in *network.Timestamp, out *Timestamp, s conversion.Scope) error {
+	out.Nano = in.Nano
+	return nil
+}
+
+// Convert_network_Timestamp_To_v1alpha1_Timestamp is an autogenerated conversion function.
+func Convert_network_Timestamp_To_v1alpha1_Timestamp(in *network.Timestamp, out *Timestamp, s conversion.Scope) error {
+	return autoConvert_network_Timestamp_To_v1alpha1_Timestamp(in, out, s)
+}
diff --git a/staging/kos/pkg/apis/network/v1alpha1/zz_generated.deepcopy.go b/staging/kos/pkg/apis/network/v1alpha1/zz_generated.deepcopy.go
index 312532c8a..f042465fd 100644
--- a/staging/kos/pkg/apis/network/v1alpha1/zz_generated.deepcopy.go
+++ b/staging/kos/pkg/apis/network/v1alpha1/zz_generated.deepcopy.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -47,6 +47,27 @@ func (in *ExecReport) DeepCopy() *ExecReport {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ExtendedObjectMeta) DeepCopyInto(out *ExtendedObjectMeta) {
+	*out = *in
+	if in.Writes != nil {
+		in, out := &in.Writes, &out.Writes
+		*out = make(WriteSet, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExtendedObjectMeta.
+func (in *ExtendedObjectMeta) DeepCopy() *ExtendedObjectMeta {
+	if in == nil {
+		return nil
+	}
+	out := new(ExtendedObjectMeta)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *IPLock) DeepCopyInto(out *IPLock) {
 	*out = *in
@@ -128,6 +149,7 @@ func (in *NetworkAttachment) DeepCopyInto(out *NetworkAttachment) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.ExtendedObjectMeta.DeepCopyInto(&out.ExtendedObjectMeta)
 	in.Spec.DeepCopyInto(&out.Spec)
 	in.Status.DeepCopyInto(&out.Status)
 	return
@@ -258,11 +280,29 @@ func (in *NetworkAttachmentStatus) DeepCopy() *NetworkAttachmentStatus {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ObjectWrite) DeepCopyInto(out *ObjectWrite) {
+	*out = *in
+	out.ServerTime = in.ServerTime
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ObjectWrite.
+func (in *ObjectWrite) DeepCopy() *ObjectWrite {
+	if in == nil {
+		return nil
+	}
+	out := new(ObjectWrite)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Subnet) DeepCopyInto(out *Subnet) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.ExtendedObjectMeta.DeepCopyInto(&out.ExtendedObjectMeta)
 	out.Spec = in.Spec
 	in.Status.DeepCopyInto(&out.Status)
 	return
@@ -355,3 +395,39 @@ func (in *SubnetStatus) DeepCopy() *SubnetStatus {
 	in.DeepCopyInto(out)
 	return out
 }
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Timestamp) DeepCopyInto(out *Timestamp) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Timestamp.
+func (in *Timestamp) DeepCopy() *Timestamp {
+	if in == nil {
+		return nil
+	}
+	out := new(Timestamp)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in WriteSet) DeepCopyInto(out *WriteSet) {
+	{
+		in := &in
+		*out = make(WriteSet, len(*in))
+		copy(*out, *in)
+		return
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new WriteSet.
+func (in WriteSet) DeepCopy() WriteSet {
+	if in == nil {
+		return nil
+	}
+	out := new(WriteSet)
+	in.DeepCopyInto(out)
+	return *out
+}
diff --git a/staging/kos/pkg/apis/network/v1alpha1/zz_generated.defaults.go b/staging/kos/pkg/apis/network/v1alpha1/zz_generated.defaults.go
index 19cace50a..843ec79ac 100644
--- a/staging/kos/pkg/apis/network/v1alpha1/zz_generated.defaults.go
+++ b/staging/kos/pkg/apis/network/v1alpha1/zz_generated.defaults.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/apis/network/zz_generated.deepcopy.go b/staging/kos/pkg/apis/network/zz_generated.deepcopy.go
index a4a7f4c84..beb6f5c9c 100644
--- a/staging/kos/pkg/apis/network/zz_generated.deepcopy.go
+++ b/staging/kos/pkg/apis/network/zz_generated.deepcopy.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -47,6 +47,27 @@ func (in *ExecReport) DeepCopy() *ExecReport {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ExtendedObjectMeta) DeepCopyInto(out *ExtendedObjectMeta) {
+	*out = *in
+	if in.Writes != nil {
+		in, out := &in.Writes, &out.Writes
+		*out = make(WriteSet, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExtendedObjectMeta.
+func (in *ExtendedObjectMeta) DeepCopy() *ExtendedObjectMeta {
+	if in == nil {
+		return nil
+	}
+	out := new(ExtendedObjectMeta)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *IPLock) DeepCopyInto(out *IPLock) {
 	*out = *in
@@ -128,6 +149,7 @@ func (in *NetworkAttachment) DeepCopyInto(out *NetworkAttachment) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.ExtendedObjectMeta.DeepCopyInto(&out.ExtendedObjectMeta)
 	in.Spec.DeepCopyInto(&out.Spec)
 	in.Status.DeepCopyInto(&out.Status)
 	return
@@ -258,11 +280,29 @@ func (in *NetworkAttachmentStatus) DeepCopy() *NetworkAttachmentStatus {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ObjectWrite) DeepCopyInto(out *ObjectWrite) {
+	*out = *in
+	out.ServerTime = in.ServerTime
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ObjectWrite.
+func (in *ObjectWrite) DeepCopy() *ObjectWrite {
+	if in == nil {
+		return nil
+	}
+	out := new(ObjectWrite)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Subnet) DeepCopyInto(out *Subnet) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.ExtendedObjectMeta.DeepCopyInto(&out.ExtendedObjectMeta)
 	out.Spec = in.Spec
 	in.Status.DeepCopyInto(&out.Status)
 	return
@@ -355,3 +395,39 @@ func (in *SubnetStatus) DeepCopy() *SubnetStatus {
 	in.DeepCopyInto(out)
 	return out
 }
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Timestamp) DeepCopyInto(out *Timestamp) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Timestamp.
+func (in *Timestamp) DeepCopy() *Timestamp {
+	if in == nil {
+		return nil
+	}
+	out := new(Timestamp)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in WriteSet) DeepCopyInto(out *WriteSet) {
+	{
+		in := &in
+		*out = make(WriteSet, len(*in))
+		copy(*out, *in)
+		return
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new WriteSet.
+func (in WriteSet) DeepCopy() WriteSet {
+	if in == nil {
+		return nil
+	}
+	out := new(WriteSet)
+	in.DeepCopyInto(out)
+	return *out
+}
diff --git a/staging/kos/pkg/client/clientset/internalversion/clientset.go b/staging/kos/pkg/client/clientset/internalversion/clientset.go
index f2ad07ada..7868c614a 100644
--- a/staging/kos/pkg/client/clientset/internalversion/clientset.go
+++ b/staging/kos/pkg/client/clientset/internalversion/clientset.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/doc.go b/staging/kos/pkg/client/clientset/internalversion/doc.go
index c08746a77..e96cc3301 100644
--- a/staging/kos/pkg/client/clientset/internalversion/doc.go
+++ b/staging/kos/pkg/client/clientset/internalversion/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/fake/clientset_generated.go b/staging/kos/pkg/client/clientset/internalversion/fake/clientset_generated.go
index 110a6966e..827fdadf8 100644
--- a/staging/kos/pkg/client/clientset/internalversion/fake/clientset_generated.go
+++ b/staging/kos/pkg/client/clientset/internalversion/fake/clientset_generated.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/fake/doc.go b/staging/kos/pkg/client/clientset/internalversion/fake/doc.go
index acfa6173b..d6baf01ac 100644
--- a/staging/kos/pkg/client/clientset/internalversion/fake/doc.go
+++ b/staging/kos/pkg/client/clientset/internalversion/fake/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/fake/register.go b/staging/kos/pkg/client/clientset/internalversion/fake/register.go
index f7eadb11d..9d19577cd 100644
--- a/staging/kos/pkg/client/clientset/internalversion/fake/register.go
+++ b/staging/kos/pkg/client/clientset/internalversion/fake/register.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/scheme/doc.go b/staging/kos/pkg/client/clientset/internalversion/scheme/doc.go
index 7f61dc1f9..7d06c9402 100644
--- a/staging/kos/pkg/client/clientset/internalversion/scheme/doc.go
+++ b/staging/kos/pkg/client/clientset/internalversion/scheme/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/scheme/register.go b/staging/kos/pkg/client/clientset/internalversion/scheme/register.go
index f1c265724..34a9e1890 100644
--- a/staging/kos/pkg/client/clientset/internalversion/scheme/register.go
+++ b/staging/kos/pkg/client/clientset/internalversion/scheme/register.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/doc.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/doc.go
index e16889135..c6f18dc80 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/doc.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/doc.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/doc.go
index ab4fd43ad..0243e68ff 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/doc.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_iplock.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_iplock.go
index 07c3b3ee1..174eee596 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_iplock.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_network_client.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_network_client.go
index 5df88d222..88f1eb02f 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_network_client.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_network_client.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_networkattachment.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_networkattachment.go
index 405246c5c..5522c2b9e 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_networkattachment.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_subnet.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_subnet.go
index 9d0cdd16e..01a8dca4d 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_subnet.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/fake/fake_subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/generated_expansion.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/generated_expansion.go
index ea582f00d..b12672964 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/generated_expansion.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/generated_expansion.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/iplock.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/iplock.go
index a1ba5b10b..9cf77e674 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/iplock.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/network_client.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/network_client.go
index df51648c5..0ae2225c7 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/network_client.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/network_client.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/networkattachment.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/networkattachment.go
index 57407f808..8e314a427 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/networkattachment.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/subnet.go b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/subnet.go
index cd7917599..be0de2102 100644
--- a/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/subnet.go
+++ b/staging/kos/pkg/client/clientset/internalversion/typed/network/internalversion/subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/clientset.go b/staging/kos/pkg/client/clientset/versioned/clientset.go
index 21b73e9de..12563b2fc 100644
--- a/staging/kos/pkg/client/clientset/versioned/clientset.go
+++ b/staging/kos/pkg/client/clientset/versioned/clientset.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/doc.go b/staging/kos/pkg/client/clientset/versioned/doc.go
index dc992b90b..6ee812fc5 100644
--- a/staging/kos/pkg/client/clientset/versioned/doc.go
+++ b/staging/kos/pkg/client/clientset/versioned/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/fake/clientset_generated.go b/staging/kos/pkg/client/clientset/versioned/fake/clientset_generated.go
index d5071921a..e930c5223 100644
--- a/staging/kos/pkg/client/clientset/versioned/fake/clientset_generated.go
+++ b/staging/kos/pkg/client/clientset/versioned/fake/clientset_generated.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/fake/doc.go b/staging/kos/pkg/client/clientset/versioned/fake/doc.go
index acfa6173b..d6baf01ac 100644
--- a/staging/kos/pkg/client/clientset/versioned/fake/doc.go
+++ b/staging/kos/pkg/client/clientset/versioned/fake/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/fake/register.go b/staging/kos/pkg/client/clientset/versioned/fake/register.go
index 8904a7094..92a3f5c75 100644
--- a/staging/kos/pkg/client/clientset/versioned/fake/register.go
+++ b/staging/kos/pkg/client/clientset/versioned/fake/register.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/scheme/doc.go b/staging/kos/pkg/client/clientset/versioned/scheme/doc.go
index 7f61dc1f9..7d06c9402 100644
--- a/staging/kos/pkg/client/clientset/versioned/scheme/doc.go
+++ b/staging/kos/pkg/client/clientset/versioned/scheme/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/scheme/register.go b/staging/kos/pkg/client/clientset/versioned/scheme/register.go
index 4e872a508..53f68209a 100644
--- a/staging/kos/pkg/client/clientset/versioned/scheme/register.go
+++ b/staging/kos/pkg/client/clientset/versioned/scheme/register.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/doc.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/doc.go
index 9752e759c..54eabf945 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/doc.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/doc.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/doc.go
index ab4fd43ad..0243e68ff 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/doc.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/doc.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_iplock.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_iplock.go
index 0a48493d5..2501881cb 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_iplock.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_network_client.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_network_client.go
index d10654c81..c05064c9b 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_network_client.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_network_client.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_networkattachment.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_networkattachment.go
index df674f406..86df8ac18 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_networkattachment.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_subnet.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_subnet.go
index 8846d3fdc..6d7265edc 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_subnet.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/fake/fake_subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/generated_expansion.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/generated_expansion.go
index b9f303664..3b54466c0 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/generated_expansion.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/generated_expansion.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/iplock.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/iplock.go
index 13881dacc..d6693178e 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/iplock.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/network_client.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/network_client.go
index 00bcd6bfa..eec83e012 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/network_client.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/network_client.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/networkattachment.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/networkattachment.go
index 844ba939a..74fc1d3be 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/networkattachment.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/subnet.go b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/subnet.go
index e1c79d21c..c613f7be3 100644
--- a/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/subnet.go
+++ b/staging/kos/pkg/client/clientset/versioned/typed/network/v1alpha1/subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/factory.go b/staging/kos/pkg/client/informers/externalversions/factory.go
index b6c87b770..87db4e8ae 100644
--- a/staging/kos/pkg/client/informers/externalversions/factory.go
+++ b/staging/kos/pkg/client/informers/externalversions/factory.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/generic.go b/staging/kos/pkg/client/informers/externalversions/generic.go
index 60d470711..0ceeda6ad 100644
--- a/staging/kos/pkg/client/informers/externalversions/generic.go
+++ b/staging/kos/pkg/client/informers/externalversions/generic.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/internalinterfaces/factory_interfaces.go b/staging/kos/pkg/client/informers/externalversions/internalinterfaces/factory_interfaces.go
index c99664550..f2dbbc8f2 100644
--- a/staging/kos/pkg/client/informers/externalversions/internalinterfaces/factory_interfaces.go
+++ b/staging/kos/pkg/client/informers/externalversions/internalinterfaces/factory_interfaces.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/network/interface.go b/staging/kos/pkg/client/informers/externalversions/network/interface.go
index 77d07cf69..ad1ad94e4 100644
--- a/staging/kos/pkg/client/informers/externalversions/network/interface.go
+++ b/staging/kos/pkg/client/informers/externalversions/network/interface.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/interface.go b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/interface.go
index e2bc99046..3d72d7a66 100644
--- a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/interface.go
+++ b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/interface.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/iplock.go b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/iplock.go
index 501bcb967..3be0d590c 100644
--- a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/iplock.go
+++ b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/networkattachment.go b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/networkattachment.go
index 6ca67457b..fd7628251 100644
--- a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/networkattachment.go
+++ b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/subnet.go b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/subnet.go
index bf026c67a..013247530 100644
--- a/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/subnet.go
+++ b/staging/kos/pkg/client/informers/externalversions/network/v1alpha1/subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/factory.go b/staging/kos/pkg/client/informers/internalversion/factory.go
index 3ccabed12..83ef95df6 100644
--- a/staging/kos/pkg/client/informers/internalversion/factory.go
+++ b/staging/kos/pkg/client/informers/internalversion/factory.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/generic.go b/staging/kos/pkg/client/informers/internalversion/generic.go
index be7821f78..872f48abd 100644
--- a/staging/kos/pkg/client/informers/internalversion/generic.go
+++ b/staging/kos/pkg/client/informers/internalversion/generic.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/internalinterfaces/factory_interfaces.go b/staging/kos/pkg/client/informers/internalversion/internalinterfaces/factory_interfaces.go
index 4bfe39dfd..9a43d2c69 100644
--- a/staging/kos/pkg/client/informers/internalversion/internalinterfaces/factory_interfaces.go
+++ b/staging/kos/pkg/client/informers/internalversion/internalinterfaces/factory_interfaces.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/network/interface.go b/staging/kos/pkg/client/informers/internalversion/network/interface.go
index 268646971..68dc946f9 100644
--- a/staging/kos/pkg/client/informers/internalversion/network/interface.go
+++ b/staging/kos/pkg/client/informers/internalversion/network/interface.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/network/internalversion/interface.go b/staging/kos/pkg/client/informers/internalversion/network/internalversion/interface.go
index 43373d5f9..49b1b0d4e 100644
--- a/staging/kos/pkg/client/informers/internalversion/network/internalversion/interface.go
+++ b/staging/kos/pkg/client/informers/internalversion/network/internalversion/interface.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/network/internalversion/iplock.go b/staging/kos/pkg/client/informers/internalversion/network/internalversion/iplock.go
index a5c7b9286..e37a189f6 100644
--- a/staging/kos/pkg/client/informers/internalversion/network/internalversion/iplock.go
+++ b/staging/kos/pkg/client/informers/internalversion/network/internalversion/iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/network/internalversion/networkattachment.go b/staging/kos/pkg/client/informers/internalversion/network/internalversion/networkattachment.go
index 9ba8912fb..d761e6d26 100644
--- a/staging/kos/pkg/client/informers/internalversion/network/internalversion/networkattachment.go
+++ b/staging/kos/pkg/client/informers/internalversion/network/internalversion/networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/informers/internalversion/network/internalversion/subnet.go b/staging/kos/pkg/client/informers/internalversion/network/internalversion/subnet.go
index fa8f29b65..00d8709bc 100644
--- a/staging/kos/pkg/client/informers/internalversion/network/internalversion/subnet.go
+++ b/staging/kos/pkg/client/informers/internalversion/network/internalversion/subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/internalversion/expansion_generated.go b/staging/kos/pkg/client/listers/network/internalversion/expansion_generated.go
index 354dc428f..7c962aedd 100644
--- a/staging/kos/pkg/client/listers/network/internalversion/expansion_generated.go
+++ b/staging/kos/pkg/client/listers/network/internalversion/expansion_generated.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/internalversion/iplock.go b/staging/kos/pkg/client/listers/network/internalversion/iplock.go
index 0caadf056..f2379ac93 100644
--- a/staging/kos/pkg/client/listers/network/internalversion/iplock.go
+++ b/staging/kos/pkg/client/listers/network/internalversion/iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/internalversion/networkattachment.go b/staging/kos/pkg/client/listers/network/internalversion/networkattachment.go
index 0ac24d4dc..29424d244 100644
--- a/staging/kos/pkg/client/listers/network/internalversion/networkattachment.go
+++ b/staging/kos/pkg/client/listers/network/internalversion/networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/internalversion/subnet.go b/staging/kos/pkg/client/listers/network/internalversion/subnet.go
index f8b9eff35..69d982e2f 100644
--- a/staging/kos/pkg/client/listers/network/internalversion/subnet.go
+++ b/staging/kos/pkg/client/listers/network/internalversion/subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/v1alpha1/expansion_generated.go b/staging/kos/pkg/client/listers/network/v1alpha1/expansion_generated.go
index 31936a016..d84984324 100644
--- a/staging/kos/pkg/client/listers/network/v1alpha1/expansion_generated.go
+++ b/staging/kos/pkg/client/listers/network/v1alpha1/expansion_generated.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/v1alpha1/iplock.go b/staging/kos/pkg/client/listers/network/v1alpha1/iplock.go
index 1582e124f..7cc537700 100644
--- a/staging/kos/pkg/client/listers/network/v1alpha1/iplock.go
+++ b/staging/kos/pkg/client/listers/network/v1alpha1/iplock.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/v1alpha1/networkattachment.go b/staging/kos/pkg/client/listers/network/v1alpha1/networkattachment.go
index fc60f6454..78b2c7d21 100644
--- a/staging/kos/pkg/client/listers/network/v1alpha1/networkattachment.go
+++ b/staging/kos/pkg/client/listers/network/v1alpha1/networkattachment.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/client/listers/network/v1alpha1/subnet.go b/staging/kos/pkg/client/listers/network/v1alpha1/subnet.go
index f3a64e0a3..d72c1efe9 100644
--- a/staging/kos/pkg/client/listers/network/v1alpha1/subnet.go
+++ b/staging/kos/pkg/client/listers/network/v1alpha1/subnet.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/staging/kos/pkg/controllers/connectionagent/connection_agent.go b/staging/kos/pkg/controllers/connectionagent/connection_agent.go
index b82e25799..5a9ffb02b 100644
--- a/staging/kos/pkg/controllers/connectionagent/connection_agent.go
+++ b/staging/kos/pkg/controllers/connectionagent/connection_agent.go
@@ -252,6 +252,9 @@ type ConnectionAgent struct {
 	// NetworkAttachment.CreationTimestamp to remote network interface creation latency
 	attachmentCreateToRemoteIfcHistogram prometheus.Histogram
 
+	// NASectionImpl to remote network interface creation latency
+	localImplToRemoteIfcHistogram prometheus.Histogram
+
 	// Durations of calls on network fabric
 	fabricLatencyHistograms *prometheus.HistogramVec
 
@@ -297,6 +300,15 @@ func New(node string,
 			Buckets:     []float64{-0.125, 0, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256},
 			ConstLabels: map[string]string{"node": node},
 		})
+	localImplToRemoteIfcHistogram := prometheus.NewHistogram(
+		prometheus.HistogramOpts{
+			Namespace:   metricsNamespace,
+			Subsystem:   metricsSubsystem,
+			Name:        "attachment_impl_to_remote_ifc_latency_seconds",
+			Help:        "Seconds from attachment NASectionImpl Timestamp to finished creating remote interface",
+			Buckets:     []float64{-0.125, 0, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256},
+			ConstLabels: map[string]string{"node": node},
+		})
 	fabricLatencyHistograms := prometheus.NewHistogramVec(
 		prometheus.HistogramOpts{
 			Namespace:   metricsNamespace,
@@ -378,7 +390,7 @@ func New(node string,
 			Help:        "Number of queue worker threads",
 			ConstLabels: map[string]string{"node": node},
 		})
-	prometheus.MustRegister(attachmentCreateToLocalIfcHistogram, attachmentCreateToRemoteIfcHistogram, fabricLatencyHistograms, attachmentCreateToStatusHistogram, attachmentStatusHistograms, localAttachmentsGauge, remoteAttachmentsGauge, attachmentExecDurationHistograms, attachmentExecStatusCounts, fabricNameCounts, workerCount)
+	prometheus.MustRegister(attachmentCreateToLocalIfcHistogram, attachmentCreateToRemoteIfcHistogram, localImplToRemoteIfcHistogram, fabricLatencyHistograms, attachmentCreateToStatusHistogram, attachmentStatusHistograms, localAttachmentsGauge, remoteAttachmentsGauge, attachmentExecDurationHistograms, attachmentExecStatusCounts, fabricNameCounts, workerCount)
 
 	fabricNameCounts.With(prometheus.Labels{"fabric": netFabric.Name()}).Inc()
 	workerCount.Add(float64(workers))
@@ -409,6 +421,7 @@ func New(node string,
 		allowedPrograms:                      allowedPrograms,
 		attachmentCreateToLocalIfcHistogram:  attachmentCreateToLocalIfcHistogram,
 		attachmentCreateToRemoteIfcHistogram: attachmentCreateToRemoteIfcHistogram,
+		localImplToRemoteIfcHistogram:        localImplToRemoteIfcHistogram,
 		fabricLatencyHistograms:              fabricLatencyHistograms,
 		attachmentCreateToStatusHistogram:    attachmentCreateToStatusHistogram,
 		attachmentStatusHistograms:           attachmentStatusHistograms,
@@ -1057,7 +1070,7 @@ func (ca *ConnectionAgent) updateLocalAttachmentStatus(att *netv1a1.NetworkAttac
 		updatedAtt.Status.PostCreateExecReport)
 
 	if att.Status.HostIP == "" {
-		ca.attachmentCreateToStatusHistogram.Observe(tAfterUpdate.Truncate(time.Second).Sub(att.CreationTimestamp.Time).Seconds())
+		ca.attachmentCreateToStatusHistogram.Observe(updatedAtt.Writes.GetServerWriteTime(netv1a1.NASectionAddr).Sub(att.Writes.GetServerWriteTime(netv1a1.NASectionSpec)).Seconds())
 	}
 
 	return nil
diff --git a/staging/kos/pkg/controllers/connectionagent/network_interface.go b/staging/kos/pkg/controllers/connectionagent/network_interface.go
index 72aa3f3bc..bcb964aff 100644
--- a/staging/kos/pkg/controllers/connectionagent/network_interface.go
+++ b/staging/kos/pkg/controllers/connectionagent/network_interface.go
@@ -188,7 +188,7 @@ func (ca *ConnectionAgent) createLocalNetworkInterface(att *netv1a1.NetworkAttac
 	if err == nil {
 		statusErrs = ca.launchCommand(parse.AttNSN(att), ifc.LocalNetIfc, att.Spec.PostCreateExec, ifc.postCreateExecReport.Store, "postCreate", true)
 		if att.Status.IfcName == "" {
-			ca.attachmentCreateToLocalIfcHistogram.Observe(tAfter.Truncate(time.Second).Sub(att.CreationTimestamp.Time).Seconds())
+			ca.attachmentCreateToLocalIfcHistogram.Observe(tAfter.Sub(att.Writes.GetServerWriteTime(netv1a1.NASectionSpec).Time()).Seconds())
 		}
 		ca.localAttachmentsGauge.Inc()
 		ca.eventRecorder.Eventf(att, k8scorev1api.EventTypeNormal, "Implemented", "Created Linux network interface named %s with MAC address %s and IPv4 address %s", ifc.Name, ifc.GuestMAC, ifc.GuestIP)
@@ -210,7 +210,8 @@ func (ca *ConnectionAgent) createRemoteNetworkInterface(att *netv1a1.NetworkAtta
 
 	ca.fabricLatencyHistograms.With(prometheus.Labels{"op": "CreateRemoteIfc", "err": formatErrVal(err != nil)}).Observe(tAfter.Sub(tBefore).Seconds())
 	if err == nil {
-		ca.attachmentCreateToRemoteIfcHistogram.Observe(tAfter.Truncate(time.Second).Sub(att.CreationTimestamp.Time).Seconds())
+		ca.attachmentCreateToRemoteIfcHistogram.Observe(tAfter.Sub(att.Writes.GetServerWriteTime(netv1a1.NASectionSpec).Time()).Seconds())
+		ca.localImplToRemoteIfcHistogram.Observe(tAfter.Sub(att.Writes.GetServerWriteTime(netv1a1.NASectionImpl).Time()).Seconds())
 		ca.remoteAttachmentsGauge.Inc()
 	}
 
diff --git a/staging/kos/pkg/controllers/ipam/ipam.go b/staging/kos/pkg/controllers/ipam/ipam.go
index 17fc7ee4c..45674ab8a 100644
--- a/staging/kos/pkg/controllers/ipam/ipam.go
+++ b/staging/kos/pkg/controllers/ipam/ipam.go
@@ -159,7 +159,7 @@ func NewController(netIfc kosclientv1a1.NetworkV1alpha1Interface,
 			Subsystem: metricsSubsystem,
 			Name:      "attachment_create_to_address_latency_seconds",
 			Help:      "Latency from attachment CreationTimestamp to return from status update, in seconds",
-			Buckets:   []float64{-1, 0, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 64},
+			Buckets:   []float64{-1, 0, 0.125, 0.25, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 64},
 		})
 
 	attachmentUpdateHistograms := prometheus.NewHistogramVec(
@@ -781,9 +781,7 @@ func (ctlr *IPAMController) updateNAStatus(ns, name string, att *netv1a1.Network
 	tAfter := time.Now()
 	ctlr.attachmentUpdateHistograms.With(prometheus.Labels{"statusErr": FormatErrVal(len(statusErrs) > 0), "err": FormatErrVal(err != nil)}).Observe(tAfter.Sub(tBefore).Seconds())
 	if err == nil {
-		t1 := att.CreationTimestamp.Time
-		t2 := tAfter.Truncate(time.Second)
-		deltaS := t2.Sub(t1).Seconds()
+		deltaS := att3.Writes.GetServerWriteTime(netv1a1.NASectionAddr).Sub(att.Writes.GetServerWriteTime(netv1a1.NASectionSpec)).Seconds()
 		ctlr.attachmentCreateToAddressHistogram.Observe(deltaS)
 		if len(statusErrs) > 0 {
 			klog.V(4).Infof("Recorded errors %v in status of %s/%s, old ResourceVersion=%s, new ResourceVersion=%s", statusErrs, ns, name, att.ResourceVersion, att3.ResourceVersion)
diff --git a/staging/kos/pkg/generated/openapi/zz_generated.openapi.go b/staging/kos/pkg/generated/openapi/zz_generated.openapi.go
index b302f5984..1e1f3e60b 100644
--- a/staging/kos/pkg/generated/openapi/zz_generated.openapi.go
+++ b/staging/kos/pkg/generated/openapi/zz_generated.openapi.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2019 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -84,6 +84,7 @@ func GetOpenAPIDefinitions(ref common.ReferenceCallback) map[string]common.OpenA
 		"k8s.io/apimachinery/pkg/runtime.Unknown":                                       schema_k8sio_apimachinery_pkg_runtime_Unknown(ref),
 		"k8s.io/apimachinery/pkg/version.Info":                                          schema_k8sio_apimachinery_pkg_version_Info(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ExecReport":              schema_pkg_apis_network_v1alpha1_ExecReport(ref),
+		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ExtendedObjectMeta":      schema_pkg_apis_network_v1alpha1_ExtendedObjectMeta(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.IPLock":                  schema_pkg_apis_network_v1alpha1_IPLock(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.IPLockList":              schema_pkg_apis_network_v1alpha1_IPLockList(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.IPLockSpec":              schema_pkg_apis_network_v1alpha1_IPLockSpec(ref),
@@ -92,10 +93,12 @@ func GetOpenAPIDefinitions(ref common.ReferenceCallback) map[string]common.OpenA
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentList":   schema_pkg_apis_network_v1alpha1_NetworkAttachmentList(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentSpec":   schema_pkg_apis_network_v1alpha1_NetworkAttachmentSpec(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentStatus": schema_pkg_apis_network_v1alpha1_NetworkAttachmentStatus(ref),
+		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ObjectWrite":             schema_pkg_apis_network_v1alpha1_ObjectWrite(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.Subnet":                  schema_pkg_apis_network_v1alpha1_Subnet(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetList":              schema_pkg_apis_network_v1alpha1_SubnetList(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetSpec":              schema_pkg_apis_network_v1alpha1_SubnetSpec(ref),
 		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetStatus":            schema_pkg_apis_network_v1alpha1_SubnetStatus(ref),
+		"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.Timestamp":               schema_pkg_apis_network_v1alpha1_Timestamp(ref),
 	}
 }
 
@@ -2460,6 +2463,40 @@ func schema_pkg_apis_network_v1alpha1_ExecReport(ref common.ReferenceCallback) c
 	}
 }
 
+func schema_pkg_apis_network_v1alpha1_ExtendedObjectMeta(ref common.ReferenceCallback) common.OpenAPIDefinition {
+	return common.OpenAPIDefinition{
+		Schema: spec.Schema{
+			SchemaProps: spec.SchemaProps{
+				Description: "ExtendedObjectMeta has extra metadata for an API object. This is maintained by the server, clients can not modify it.",
+				Type:        []string{"object"},
+				Properties: map[string]spec.Schema{
+					"writes": {
+						VendorExtensible: spec.VendorExtensible{
+							Extensions: spec.Extensions{
+								"x-kubernetes-list-map-keys": "section",
+								"x-kubernetes-list-type":     "map",
+							},
+						},
+						SchemaProps: spec.SchemaProps{
+							Description: "Writes identifies the latest write to each part of the object.",
+							Type:        []string{"array"},
+							Items: &spec.SchemaOrArray{
+								Schema: &spec.Schema{
+									SchemaProps: spec.SchemaProps{
+										Ref: ref("k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ObjectWrite"),
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		Dependencies: []string{
+			"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ObjectWrite"},
+	}
+}
+
 func schema_pkg_apis_network_v1alpha1_IPLock(ref common.ReferenceCallback) common.OpenAPIDefinition {
 	return common.OpenAPIDefinition{
 		Schema: spec.Schema{
@@ -2569,7 +2606,8 @@ func schema_pkg_apis_network_v1alpha1_NetworkAttachment(ref common.ReferenceCall
 	return common.OpenAPIDefinition{
 		Schema: spec.Schema{
 			SchemaProps: spec.SchemaProps{
-				Type: []string{"object"},
+				Description: "NetworkAttachment is about a Linux network interface connected to a Subnet.  The sections recorded in ExtendedObjectMeta are: spec, status.address, status.impl, status.execReport.",
+				Type:        []string{"object"},
 				Properties: map[string]spec.Schema{
 					"kind": {
 						SchemaProps: spec.SchemaProps{
@@ -2590,6 +2628,12 @@ func schema_pkg_apis_network_v1alpha1_NetworkAttachment(ref common.ReferenceCall
 							Ref: ref("k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta"),
 						},
 					},
+					"extendedMetadata": {
+						SchemaProps: spec.SchemaProps{
+							Description: "`extendedMetadata` adds non-standard object metadata",
+							Ref:         ref("k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ExtendedObjectMeta"),
+						},
+					},
 					"spec": {
 						SchemaProps: spec.SchemaProps{
 							Ref: ref("k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentSpec"),
@@ -2605,7 +2649,7 @@ func schema_pkg_apis_network_v1alpha1_NetworkAttachment(ref common.ReferenceCall
 			},
 		},
 		Dependencies: []string{
-			"k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentSpec", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentStatus"},
+			"k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ExtendedObjectMeta", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentSpec", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.NetworkAttachmentStatus"},
 	}
 }
 
@@ -2838,11 +2882,41 @@ func schema_pkg_apis_network_v1alpha1_NetworkAttachmentStatus(ref common.Referen
 	}
 }
 
+func schema_pkg_apis_network_v1alpha1_ObjectWrite(ref common.ReferenceCallback) common.OpenAPIDefinition {
+	return common.OpenAPIDefinition{
+		Schema: spec.Schema{
+			SchemaProps: spec.SchemaProps{
+				Description: "ObjectWrite describes a write to part of an object",
+				Type:        []string{"object"},
+				Properties: map[string]spec.Schema{
+					"section": {
+						SchemaProps: spec.SchemaProps{
+							Description: "Section identifies the part of the object that was written. Each type of object is broken down into a type-specific set of sections.",
+							Type:        []string{"string"},
+							Format:      "",
+						},
+					},
+					"serverTime": {
+						SchemaProps: spec.SchemaProps{
+							Description: "ServerTime is the time when the write was recorded at the apiserver",
+							Ref:         ref("k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.Timestamp"),
+						},
+					},
+				},
+				Required: []string{"section", "serverTime"},
+			},
+		},
+		Dependencies: []string{
+			"k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.Timestamp"},
+	}
+}
+
 func schema_pkg_apis_network_v1alpha1_Subnet(ref common.ReferenceCallback) common.OpenAPIDefinition {
 	return common.OpenAPIDefinition{
 		Schema: spec.Schema{
 			SchemaProps: spec.SchemaProps{
-				Type: []string{"object"},
+				Description: "Subnet is about an IP subnet on a virtual network.  For ExtendedObjectMeta the sections are: spec, status.",
+				Type:        []string{"object"},
 				Properties: map[string]spec.Schema{
 					"kind": {
 						SchemaProps: spec.SchemaProps{
@@ -2863,6 +2937,12 @@ func schema_pkg_apis_network_v1alpha1_Subnet(ref common.ReferenceCallback) commo
 							Ref: ref("k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta"),
 						},
 					},
+					"extendedMetadata": {
+						SchemaProps: spec.SchemaProps{
+							Description: "`extendedMetadata` adds non-standard object metadata",
+							Ref:         ref("k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ExtendedObjectMeta"),
+						},
+					},
 					"spec": {
 						SchemaProps: spec.SchemaProps{
 							Ref: ref("k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetSpec"),
@@ -2878,7 +2958,7 @@ func schema_pkg_apis_network_v1alpha1_Subnet(ref common.ReferenceCallback) commo
 			},
 		},
 		Dependencies: []string{
-			"k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetSpec", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetStatus"},
+			"k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.ExtendedObjectMeta", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetSpec", "k8s.io/examples/staging/kos/pkg/apis/network/v1alpha1.SubnetStatus"},
 	}
 }
 
@@ -2994,3 +3074,24 @@ func schema_pkg_apis_network_v1alpha1_SubnetStatus(ref common.ReferenceCallback)
 		},
 	}
 }
+
+func schema_pkg_apis_network_v1alpha1_Timestamp(ref common.ReferenceCallback) common.OpenAPIDefinition {
+	return common.OpenAPIDefinition{
+		Schema: spec.Schema{
+			SchemaProps: spec.SchemaProps{
+				Description: "Timestamp records a time and is not truncated when marshalled.  A Timestamp does not record a location but is unambiguous; it is the number of nanoseconds since Jan 1, 1970 began in Greenwich, UK.",
+				Type:        []string{"object"},
+				Properties: map[string]spec.Schema{
+					"nano": {
+						SchemaProps: spec.SchemaProps{
+							Description: "Nano is that number.",
+							Type:        []string{"integer"},
+							Format:      "int64",
+						},
+					},
+				},
+				Required: []string{"nano"},
+			},
+		},
+	}
+}
diff --git a/staging/kos/pkg/registry/network/networkattachment/strategy.go b/staging/kos/pkg/registry/network/networkattachment/strategy.go
index 1c58d9eb6..3fe3b651c 100644
--- a/staging/kos/pkg/registry/network/networkattachment/strategy.go
+++ b/staging/kos/pkg/registry/network/networkattachment/strategy.go
@@ -87,10 +87,40 @@ func (networkattachmentStrategy) NamespaceScoped() bool {
 
 func (networkattachmentStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
 	na := obj.(*network.NetworkAttachment)
+	na.ExtendedObjectMeta = network.ExtendedObjectMeta{}
+	na.Writes = na.Writes.SetWrite(network.NASectionSpec, network.Now())
 	na.Status = network.NetworkAttachmentStatus{}
 }
 
 func (networkattachmentStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
+	oldNA := old.(*network.NetworkAttachment)
+	newNA := obj.(*network.NetworkAttachment)
+	newNA.ExtendedObjectMeta = oldNA.ExtendedObjectMeta
+	now := network.Now()
+	if oldNA.Spec.Node != newNA.Spec.Node || oldNA.Spec.Subnet != newNA.Spec.Subnet || !SliceOfStringEqual(oldNA.Spec.PostCreateExec, newNA.Spec.PostCreateExec) || !SliceOfStringEqual(oldNA.Spec.PostDeleteExec, newNA.Spec.PostDeleteExec) {
+		newNA.Writes = newNA.Writes.SetWrite(network.NASectionSpec, now)
+	}
+	if oldNA.Status.LockUID != newNA.Status.LockUID || oldNA.Status.AddressVNI != newNA.Status.AddressVNI || oldNA.Status.IPv4 != newNA.Status.IPv4 || !SliceOfStringEqual(oldNA.Status.Errors.IPAM, newNA.Status.Errors.IPAM) {
+		newNA.Writes = newNA.Writes.SetWrite(network.NASectionAddr, now)
+	}
+	if oldNA.Status.MACAddress != newNA.Status.MACAddress || oldNA.Status.IfcName != newNA.Status.IfcName || oldNA.Status.HostIP != newNA.Status.HostIP || !SliceOfStringEqual(oldNA.Status.Errors.Host, newNA.Status.Errors.Host) {
+		newNA.Writes = newNA.Writes.SetWrite(network.NASectionImpl, now)
+	}
+	if !oldNA.Status.PostCreateExecReport.Equiv(newNA.Status.PostCreateExecReport) {
+		newNA.Writes = newNA.Writes.SetWrite(network.NASectionExecReport, now)
+	}
+}
+
+func SliceOfStringEqual(x, y []string) bool {
+	if len(x) != len(y) {
+		return false
+	}
+	for i, xi := range x {
+		if xi != y[i] {
+			return false
+		}
+	}
+	return true
 }
 
 func (networkattachmentStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
diff --git a/staging/kos/pkg/registry/network/subnet/strategy.go b/staging/kos/pkg/registry/network/subnet/strategy.go
index 5dddff39f..6374624c1 100644
--- a/staging/kos/pkg/registry/network/subnet/strategy.go
+++ b/staging/kos/pkg/registry/network/subnet/strategy.go
@@ -97,10 +97,34 @@ func (*subnetStrategy) NamespaceScoped() bool {
 
 func (*subnetStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
 	subnet := obj.(*network.Subnet)
+	subnet.ExtendedObjectMeta = network.ExtendedObjectMeta{}
+	subnet.Writes = subnet.Writes.SetWrite(network.SubnetSectionSpec, network.Now())
 	subnet.Status = network.SubnetStatus{}
 }
 
 func (*subnetStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
+	oldSubnet := old.(*network.Subnet)
+	newSubnet := obj.(*network.Subnet)
+	newSubnet.ExtendedObjectMeta = oldSubnet.ExtendedObjectMeta
+	now := network.Now()
+	if newSubnet.Spec != oldSubnet.Spec {
+		newSubnet.Writes = newSubnet.Writes.SetWrite(network.SubnetSectionSpec, now)
+	}
+	if newSubnet.Status.Validated != oldSubnet.Status.Validated || !SliceOfStringEqual(newSubnet.Status.Errors, oldSubnet.Status.Errors) {
+		newSubnet.Writes = newSubnet.Writes.SetWrite(network.SubnetSectionStatus, now)
+	}
+}
+
+func SliceOfStringEqual(x, y []string) bool {
+	if len(x) != len(y) {
+		return false
+	}
+	for i, xi := range x {
+		if xi != y[i] {
+			return false
+		}
+	}
+	return true
 }
 
 func (ss *subnetStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {