[BUG] Unable to add node to remote cluster due to DNS issue

[jettdc]

What did you do

• How was the cluster created?

  • cluster is a remote cluster that I want to add a k3d agent to

• What did you do afterwards?

k3d node create test-agent \                                                                                                         ─╯
  --role agent \
  --token <MYTOKEN>  \
  --cluster https://<MY EC2 IP>:6443 \
  --k3s-arg "--tls-san=<MY EC2 IP>" \

What did you expect to happen

I expected to add a local agent to my remote cluster, but instead got a strange DNS error. This may be related to the fact that I have a custom CA that needs to be added to the container, but there's no option to mount a volume when using this command. I tried using --image with the following configuration, to no avail (same error):

FROM rancher/k3d:latest

COPY my-ca-bundle.crt /etc/ssl/certs/my-ca-bundle.crt

Screenshots or terminal output

INFO[0000] Adding 1 node(s) to the remote cluster 'https://<MY EC2 IP>:6443'... 
FATA[0000] failed to add 1 node(s) to the remote cluster 'https://<MY EC2 IP>:6443': failed to add one or more nodes: failed to run node 'k3d-test-agent-0': failed to start node 'k3d-test-agent-0': failed to enable k3d fixes: Cannot enable DNS fix, as Host Gateway IP is missing! 

Which OS & Architecture

arch: aarch64
cgroupdriver: cgroupfs
cgroupversion: "2"
endpoint: /var/run/docker.sock
filesystem: extfs
infoname: docker-desktop
name: docker
os: Docker Desktop
ostype: linux
version: 27.1.1

Which version of k3d

k3d version v5.7.3
k3s version v1.30.3-k3s1 (default)

Which version of docker

Client:
 Version:           27.1.1
 API version:       1.46
 Go version:        go1.21.12
 Git commit:        6312585
 Built:             Tue Jul 23 19:54:12 2024
 OS/Arch:           darwin/arm64
 Context:           desktop-linux

Server: Docker Desktop 4.33.0 (160616)
 Engine:
  Version:          27.1.1
  API version:      1.46 (minimum version 1.24)
  Go version:       go1.21.12
  Git commit:       cc13f95
  Built:            Tue Jul 23 19:57:14 2024
  OS/Arch:          linux/arm64
  Experimental:     false
 containerd:
  Version:          1.7.19
  GitCommit:        2bf793ef6dc9a18e00cb12efb64355c2c9d5eb41
 runc:
  Version:          1.7.19
  GitCommit:        v1.1.13-0-g58aa920
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0