netplan assigns local-link addresses when local-link is diabled

[LnxGnome]

netplan will assign an ipv4 address by default, even if link-local is set to an empty set (link-local: [ ]) to disable it.

The comments in the source suggest that if no address is specified, then link-local should be enabled, and the code does not check it link-local is disabled.

This is faulty logic as you may have stacked interface (example: Physical<VLAN<bridge) where I only want the top (Bridge) to have an address assigned, and neither the Physical or VLAN should be assigned any address. As it is, netplan will would enable link-local for all the lower interfaces that do not have addresses assigned.

[Lukas Märdian (slyon)]

Thank you very much for your analysis and the patch provided. It sounds reasonable at first glance.

Would you mind transforming your patch into a pull-request at https://github.com/canonical/netplan/pulls for easier review and iteration?

[LnxGnome (lnxgnome)]

Can do. Will add creating a pull to my tasks.

[LnxGnome (lnxgnome)]

I found my patch isn't quite complete, or maybe it's another issue, as I'm still getting multiple IPv6 addresses on Bridge interfaces. I'll update here when I sort that out.