Date: Wed, 29 Aug 2001 22:22:22 +0200 (CEST) From: Wouter Van Hemel <wvhemel@vub.ac.be> To: Rogier Steehouder <r.j.s@gmx.net> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: [FBSD-Q] ipv6 route configuration Message-ID: <Pine.LNX.4.33.0108292218390.136-100000@cocaine.cryolabs.net> In-Reply-To: <20010829221452.A1131@rhosgobel.net>
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On Wed, 29 Aug 2001, Rogier Steehouder wrote:
> On Wednesday 29-08-29 17:06:08, Wouter Van Hemel wrote:
> > Now, I want to do the same, using the globally routable 3ffe:b80:1c8::/48
> > class (but without natd, ofcourse):
> >
> > router = 3ffe:b80:1c8::1
> > server1 = 3ffe:b80:1c8::2
> > server2 = 3ffe:b80:1c8::3
> > (etc)
>
> > The problem now is, that each setup I tried, only the router can be traced
> > from the outside (3ffe:b80:1c8::1), and for instance server1
> > (3ffe:b80:1c8::2) either times out (traceroute = * * * etc), or starts
> > repeating the packets between 3ffe:b80:1c8::1 and the upward tunnel
> > address.
>
> > ##### start #####
> > route add -inet6 3ffe:0b80:01c8:: -prefixlen 48 -interface lo0
> > (--> why lo0 ?? shouldn't this subnet be send to ed1, the internal net?)
> > sysctl -w net.inet6.ip6.forwarding=1
> > sysctl -w net.inet6.ip6.accept_rtadv=0
> > ifconfig ed1 inet6 3ffe:b80:1c8:1::1 prefixlen 64
> >
> > ##### end #####
>
> > So, my questions (finally :) ):
>
> I haven't tried a big subnet (1 PC), but I'll try to help out.
>
> > 1) why does the /48 class get bound to lo0?
>
> I have no idea.
>
> > 2) how do I send the full /48 class to the internal net, using ::1 for the
> > router itself - like my ipv4 internal net?
>
> As far as I can remember (it has been nearly a year) I used the same
> 'route' line, but using the internal nic instead of lo0.
>
That's what's been bugging me all along. Why lo0 and not ed1. Maybe it has
something to do with looping.
> I set both sysctl variables to 1 and let both router and other PC's figure
> out their IPv6 addresses on their own. They will most certainly not be
> ...::1, ...::2, etc.
>
> You can also manually configure IPv6 addresses on all hosts.
>
And that would be with just 'ifconfig ed0 inet6 their_ip', right?
> > 3) does rtadvd have to run on all machines, or just the router?
>
> Just the router! Else it might confuse hosts, I think. (I'm the router -
> No, I'm the router - etc.)
>
Hmmm... That's indeed not what I want, they're confused enough as it is :)
> > Anybody with a better understanding of routing, please enlighten me, or
> > point me to good resources... thanks :)
>
> Limited knowledge on routing, but some experience in IPv6.
>
> Make sure of your firewall (ip6fw) if you use it. Especially using
> autoconfiguration. An IPv6 fw needs much more thought than an IPv4 fw.
>
Sure, after I made it work. That won't be such a problem.
> with kind regards, Rogier Steehouder
>
Thanks.
> --
> ___ _
> -O_\ //
> | / Rogier Steehouder //\
> / \ r.j.s@gmx.net // \
> <---------------------- 90m ---------------------->
>
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