Dear diary, on Sun, Mar 10, 2002 at 07:27:38AM CET, I got a letter,
where Pekka Savola <pekkas@xxxxxxxxxx> told me, that...
> On Sun, 10 Mar 2002, Jan Oravec wrote:
> > On Sat, Mar 09, 2002 at 08:40:17PM +0200, Pekka Savola wrote:
> > > On Sat, 9 Mar 2002 kuznet@xxxxxxxxxxxxx wrote:
> > > > Pekka, please, reread the report; they talk about _neigbour_
> > > > _solicitations_.
> > > > They have nothing to do either with ifp->probes, RS, DA or with
> > > > addrconf.c
> > > > at all. It is deal of ndisc.c/neghbour.c.
> > >
> > > Well, DAD *does* use neighbour solicitations. But the problem report was
> > > indeed rather unclear; at least tcpdumps would have been nice.
> >
> > We hadn't log files until now, because this problem happens about once per
> > 2-3 days.
> >
> > Here is example of tcpdump log...
> >
> > fe80::201:2ff:fedc:d28c is FreeBSD box
> > fe80::3e18:401b is Linux box (2.4.18)
> >
> > after some time without any problem it started to answer with redirect
> > instead of neighbor advertisement.
> >
> > #tcpdump -i gif0 -n icmp6
> >
> > 04:42:40.187050 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor
> > sol: who has fe80::3e18:401b
> > 04:42:40.223644 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
> > fe80::3e18:401b to fe80::3e18:401b
> > 04:42:40.224794 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor
> > sol: who has fe80::3e18:401b
> > 04:42:40.226296 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
> > fe80::3e18:401b unreachable address
>
> I think I've seen something similar to this before, and IIRC it was caused by
> the fact that loopback interface had been brought down.
>
> If loopback has been taken down and is back up, IIRC the addresses of the
> interfaces must be "refreshed" (e.g. by also taking the interfaces down and
> up).
First, sorry for the late reply.
The problem is, that we don't do anything with loopback interface at all.
Please ask us for any additional informations you need, we'll gladly provide
you them.
--
Petr "Pasky" Baudis
* elinks maintainer * IPv6 guy (XS26 co-coordinator)
* IRCnet operator * FreeCiv AI hacker
.
Teamwork is essential -- it allows you to blame someone else.
.
Public PGP key && geekcode && homepage: http://pasky.ji.cz/~pasky/
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