Comment # 10 on bug 1166358 from Marius Tomaschewski

(In reply to Andreas Jaeger from comment #8)
> (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?

You can connect to the internet also without enabling forwarding, so it is
safe to disable it again... It may be needed when you run some VPN on the
machine, but the VPN software will usually either complain or turn it on.