I can confirm the details of this problem. When I am on an IPv6-enabled WLAN with radvd running on the router, selecting a new wlan (or even the same one) causes multicast to fail on the interface. Rebooting does not seem to always help. Flushing the addresses and routes and re-adding the link-local address to the interface seems to fix the problem.
Also, I don't think NetworkManager is sending a neighbor notification to the router to trigger an advertisement when IPv6 is set to anything other than Ignore. Because of this, NetworkManager will wait and wait and wait for a scheduled advertisement from the router. Then, unless I manage to get lucky, the entire connection fails and I have no network connectivity unless I set IPv6 to Ignore again, clearing out all my IPv6-only settings.. This should not be happening; even if I weren't using IPv6-only settings, I should not have to "get lucky" for my connections to work. -- IPv6 configuration is not flushed when interface goes down https://bugs.launchpad.net/bugs/215497 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
