Public bug reported: There are two related bugs to this:
https://bugs.launchpad.net/maas/+bug/1655440 and https://bugs.launchpad.net/ubuntu/+source/nplan/+bug/1717404 ... The first is the original bug, which lead to disabling processing of Router Advertisements by default. Netplan, when no IPv6 address exists and DHCPv6 was disabled, would write extra config to not let systemd allow RAs. This would avoid otherwise unconfigured interfaces get SLAAC IPv6 addresses. This goes against the kernel's own defaults. The second is a bug opened because of this change, which we accept as a behavioral regression of netplan. Given that we would be better served to follow the kernel's defaults, and that MAAS can easily ship custom configuration for specific use- cases (and that it was a "discussion bug", so not tied to a specific need, otherwise fixed by an external change), and that we would do well to be as permissive as possible and try everything we can to have a network come up, I have reverted the change for bug 1655440. This fixes 1717404, but reopens 1655440. To allow special use-cases to ship their own configuration with the config they need, let's provide an "accept-ra" key in netplan, that will be ON by default (but can be toggled off when present) to allow bug 1655440 to be closed. I am requesting a Feature Freeze Exception for this change given that it is a new (though tiny) feature introduced in netplan past Feature Freeze. ** Affects: nplan (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1717567 Title: [FFE] Introduce accept-ra: no to allow disabling Router Advertisement processing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nplan/+bug/1717567/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
