Implement stateful DHCPv6 in forkdhcp

[defect-track]

Is there an existing issue for this?

• There is no existing issue for this feature

What are you currently unable to do

This feature request is based on the following forum thread https://discuss.linuxcontainers.org/t/no-ipv6-for-incus-oci-containers/21086

In general you can work with dynamic IP addresses but for some services like DNS it is recommended to use a static IP. With the latest release 6.11 we can now configure custom DNS for OVN, bridge, etc. networks which is great. Trying to setup an OCI DNS on a static IPv6 only network. Current workaround is to have IPv4 enabled or use an container.

What do you think would need to be added

From my understanding of the forum topic stateful IPv6 support for OCI images.

[davidbockelman]

Hello, I'm a student at UT in Professor Chidambaram's Virtualization course. Could me and my partner take on this issue?

[stgraber]

For sure!

[davidbockelman]

Hello, our professor has advised us that this issue is harder than we initially thought, so we have chosen different issues to work on. I hope this doesn't cause you any inconvenience.

[stgraber]

Okay. I unassigned you.

For anyone else looking at this one, it should actually be pretty simple.
We have a very minimal DHCP client in cmd/incusd/main_forknet.go (skip through all the C stuff, it's not relevant to the DHCP client, it's the RunDHCP struct and functions you want).

The current DHCPv4 client is implemented by using github.com/insomniacslk/dhcp which has support for both IPv4 and IPv6 DHCP client, so wiring up a basic stateful DHCPv6 client should be pretty straightforward unless there's something particularly different from their equivalent DHCPv4 client.

[rahafjrw]

hi! I'm a student at UT Austin's virtualization course and my partner and I were hoping to take this issue on. Can this be assigned to us? thank you!

[orcadennis]

I'm in the group with rahafjrw, could I also be assigned this issue?

[stgraber]

Done!