Comment # 8 on bug 1166358 from Andreas Jaeger

(In reply to Marius Tomaschewski from comment #6)
> You're not on a host but on a router, see comment 4:
> 
>   net.ipv6.conf.all.forwarding = 1
>   net.ipv6.conf.br0.forwarding = 1


I have virtual machines and those need to connect to the internet, don't I need
that setting in this case?

Just double checking.

> A router (kernel) ignores RAs and does not autoconfigure the interfaces,
> so all the autoconf=1, ... have no effect.
> 
> Please either configure the kernel to process the RA using:
> 
>   net.ipv6.conf.all.accept_ra = 2
> [...]

Thanks for these details, will change.