Browsing over IPv6

[Wojciech Puchar]

>
> Me <--ethernet, MTU1500, native IPv6--> mattapan <-|
>                                                   |
> World <-- v6 in v4 tunnel, gif0, MTU1280-----------|
>
> (mattapan is my FreeBSD 8.2-STABLE router, "Me" is running 9.0-STABLE.)
> If I run "route change -inet6 :: -mtu 1280" on "Me," everything starts
> working again.  Should this be necessary?                    -- George
ICMP6 control packets aren't blocked?