Date: Sun, 2 Sep 2001 22:31:20 +0200 (CEST) From: Wouter Van Hemel <wvhemel@vub.ac.be> To: JINMEI Tatuya <jinmei@isl.rdc.toshiba.co.jp> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: ipv6 route configuration Message-ID: <Pine.LNX.4.33.0109022217320.104-100000@cocaine.cryolabs.net> In-Reply-To: <y7vu1ylh9xc.wl@condor.jinmei.org>
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On Mon, 3 Sep 2001, JINMEI Tatuya / [ISO-2022-JP] 神明達哉 wrote:
> First of all, please specify the OS and its version of your router and
> hosts. Without the information, we cannot diagnose the problem
> correctly.
>
I'm sorry, I'm running FreeBSD 4.3 (otherwise I wouldn't have send it to
this list :) ).
I got it working two days ago, the problem was the end-host in my eternal
network that I tried to reach from the outside, and not the router. I
disallowed it to accept route advertissements, because I wanted to
configure it manually (wasn't so fond of the complicated automaticly
assigned ipv6-address), but I added a route to my gateway like this:
route add default inet6 ipv6-address-of-router
instead of the correct
route add default inet6 link-local-address-router%interface
This caused my routes to time-out once route auto-config was disabled.
(Why does ipv6 need to know the mac (link-local) address, while with ipv4
you can just assign the ip of the gateway? Isn't this a step back instead
of forward?)
> >>>>> On Wed, 29 Aug 2001 17:06:08 +0200 (CEST),
> >>>>> Wouter Van Hemel <wvhemel@vub.ac.be> said:
>
> > 1) why does the /48 class get bound to lo0?
>
> I guess it should actually be:
>
> route add -inet6 3ffe:0b80:01c8:: -prefixlen 48 -interface lo0 -reject
> ^^^^^^^
>
> this is a typical configuration at a site-border router, in order to
> prevent packets towards non-existing internal address from being sent
> outside of the site.
>
Ah ok, that's why...
> > 2) how do I send the full /48 class to the internal net, using ::1 for the
> > router itself - like my ipv4 internal net?
>
> You don't have to advertise the full /48 route. In this
> configuration, you should only advertise 3ffe:b80:1c8::/64 on the
> internal segment. rtadvd will do this automatically.
>
> > 3) does rtadvd have to run on all machines, or just the router?
>
> No, rtadvd must run on routers only.
>
> One more related comment: you should not configure rtadvd.conf by
> hand. rtadvd will automatically collect all information that it
> needs, and will advertise it without any configuration. You should
> usually just invoke rtadvd like:
> # rtadvd ed1
>
> from KAME's rtadvd(8):
>
> If there is no configuration file entry for an interface, or if the con-
> figuration file does not exist altogether, rtadvd sets all the parameters
> to their default values. In particular, rtadvd reads all the interface
> routes from the routing table and advertises them as on-link prefixes.
>
I'll remember that. Thanks for your comments!
> JINMEI, Tatuya
> Communication Platform Lab.
> Corporate R&D Center, Toshiba Corp.
> jinmei@isl.rdc.toshiba.co.jp
>
.
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