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ARP Endianness Fixed #317
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ARP Endianness Fixed #317
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dennisafa
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Nov 30, 2021
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LGTM
twood02
approved these changes
Dec 1, 2021
@dennisafa you can merge this into develop and master |
dennisafa
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Dec 2, 2021
Changes the source IP address in ARP reply from CPU byte ordering to BE. Commit log: * ARP endianess fixed
Merged into master as well via cherry-pick. @twood02 |
catherinemeadows
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Mar 28, 2022
* [Bug Fix] ARP endianess fixed (#317) Changes the source IP address in ARP reply from CPU byte ordering to BE. Commit log: * ARP endianess fixed * change children service id to match parent * update README * update README & fix typo * update README Co-authored-by: Noah Chinitz <62520433+NoahChinitzGWU@users.noreply.github.com> Co-authored-by: CMeadows <CMeadows@localhost>
catherinemeadows
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Jul 7, 2022
* [Bug Fix] ARP endianess fixed (#317) Changes the source IP address in ARP reply from CPU byte ordering to BE. Commit log: * ARP endianess fixed * update clock for py 3.8 Co-authored-by: Noah Chinitz <62520433+NoahChinitzGWU@users.noreply.github.com> Co-authored-by: CMeadows <CMeadows@localhost>
twood02
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Aug 3, 2022
Merge branch 'develop' of https://github.com/sdnfv/openNetVM into jettjacobs-docs * 'develop' of https://github.com/sdnfv/openNetVM: Python Script Update (#325) LB Adjustments; Run without mTCP (#322) Fix incorrect comment (#323) Scaling Example NF Updates (#321) ONVM 21.10 [Bug Fix] speed_tester jumbo frames crash fix (#316) [Bug Fix] ARP endianess fixed (#317)
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The byte ordering of the ARP Response NF was correctly getting MAC address, but would get the IP address backwards. With a quick one line fix using
rte_cpu_to_be_32
the MAC address and IP address are both correct.Before:


As you can see the IP address reported by the ARP response is 1.1.10.10, when in fact the correct IP is 10.10.1.1.
We can see here that the HWAddress of
onvm-link-0
is incomplete.After:



We can see that ARP was giving a response and finding it at
onvm-link-0
.I was able to verify that
onvm-link-0
is the correct hostname fromarp -v
as well as usingarping
Summary:
Usage:
Merging notes:
TODO before merging :
Test Plan:
The change was tested using
arping
,tcpdump
,arp -v
, androute -n
to ensure correct MAC and IP.