Re: [libvirt] [PATCH] Fix dnsmasq/radvd on bridges not being able to be bound to IPv6 address on "recent" kernels

> Wow, very thorough research! Thanks for figuring this out! Thanks. It took me almost two days to figure this out and find a working solution. Interesting debugging, though, as I learned quite a lot on bridges and IPv6 DAD. > I'm leaving the country in 48 hours and may not be able to review this > before I go. If anyone else wants to take a crack at it so it can go > into this release, that would be wonderful. Otherwise I'll get to it as > soon as I possibly can. Thanks. And I've found a solution for radvd: use the “IgnoreIfMissing” flag in its config so that it continues running even if it find the interface down on startup. BTW, I'm also hesitating to set the VIR_NETDEV_TAP_CREATE_PERSIST flag automatically when no tapfd pointer is given, as currently, with my patch, if you call virNetDevTapCreate() without VIR_NETDEV_TAP_CREATE_PERSIST and without tapfd argument, the device will disappear immediately. I don't know if implicitly setting a flag is a good idea, though.