RE: ip6-localhost (::1) 2990.86 ms !H -> Why ?

From: Pekka Savola (pekkas@netcore.fi)
Date: Sun Nov 18 2001 - 05:07:11 EST


On Sun, 18 Nov 2001, NDSoftware wrote:
> > > traceroute to 6bone.net (3ffe:b00:c18:1::10) from
> > 3ffe:8271:2101:1::1,
> > > 30 hops max, 16 byte packets
> > > 1 ip6-localhost (::1) 2990.86 ms !H 2999.53 ms !H 2999.92 ms !
> > >
> > > Routes on Woody:
> > >
> > > Kernel IPv6 routing table
> > > Destination Next Hop
> > > Flags Metric Ref Use Iface
> > > ::1/128 ::
> > > U 0 0 0 lo

> > > 3ffe:8271:2101:1::1/128 ::
> > > U 0 8 1 lo
> > > 3ffe:8271:2101:1::/64 ::
> > > UA 256 594 0 eth0

Please also remove these two routes above (at least the former), as
pointed out in the 6bone etc lists.

> > > 2000::/3 ::
> > > U 1 0 0 eth0
> >
> > The last one is the problem; effectively you're saying all
> > addresses are
> > on-link, and this is better than the default route to your
> > router box.
> > Remove it and the 6bone should work just fine.
>
> Not if i remove this route:
>
> connect: Network is unreachable

Try ping6'ing the link-local address of your gateway.

FWIW, autoconfigured IPv6 node's routing table should look something like:

--8<--
Kernel IPv6 routing table
Destination Next Hop Flags Metric Ref Use Iface
::1/128 :: U 0 0 0 lo
2001:xxx:10:10:250:4ff:fe6a:db55/128 :: U 0 5 0 lo
2001:xxx:10:10::/64 :: UA 256 21123 0 eth0
fe80::250:4ff:fe6a:db55/128 :: U 0 1 0 lo
fe80::/10 :: UA 256 0 0 eth0
ff00::/8 :: UA 256 0 0 eth0
::/0 fe80::200:f8ff:fe08:3e0d UGDA 1024 7 0 eth0
--8<--

Here 250:4ff:fe6a:db55 addresses are local.

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords

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