Enhancement request: mac_address configurability for node interfaces

[cmm-cisco]

Good day. CML 2.8 added a feature where custom MAC addresses can be specified for a node and interface.

https://developer.cisco.com/docs/modeling-labs/cml-release-notes/#summary-of-changes

Would it be possible to do this in Terraform for CML?

My use case is I'd like to set up a DHCP server in my lab to give a system a particular IP, identified by its MAC address. If the MAC addresses are random, it's difficult to do this. I've tried using static IPs in a cloud-init/configuration, but I've run into a situation where I'm doing static IP for IPv4 and DHCPv6 for IPv6, and things aren't working.

I found this, but I think it's read-only.

Thank you!

[rschmied]

gee -- i think i need to set up my GH notifications in a way so that I do not need many months to see issues 😁 Only saw this now since I am starting to work on this again to make it 2.9 "compliant". And update the dependencies etc.

Hey, Chris -- this is non-trivial. Since this would need a interface resource and thus managing interfaces manually would become a thing. An option would be to add that to the link (like slot_a / slot_b) but that also does not feel right as the MAC address is clearly an attribute of the interface, not the link.

Is this a "nice-to-have" or something more serious?

[cmm-cisco]

It's not serious--it's nice to have. I also didn't know about IP snooping when I submitted this. Did you want to close it?

[rschmied]

linked this in the Wiki. Will collect things there. And this can be re-opened if there's more people asking for this.