Comment 2 for bug 589090

Thanks for reporting this bug and helping to make Ubuntu better.

I'm afraid I'm not familiar with radvd, but based on your description
it sounds much more elegant for radvd to watch for connections going
up and down, rather than have libvirt (and presumably other programs
which bring up bridges and interfaces) kick radvd.

I'm going to therefore mark this as affecting the radvd package.
If the radvd maintainers disagree, please comment here (and feel free
to toss it back to libvirt). I will subscribe so I see all comments.