Troubleshooting "Optional attribute error"

Ruben Laban r.laban+lists at
Tue May 3 10:52:20 CEST 2011

On Friday 29 April 2011 at 00:54 (CET), Ondrej Zajicek wrote:
> On Wed, Apr 27, 2011 at 05:21:21PM +0200, Ruben Laban wrote:
> > After having been down for some time, I decided to bring up an old test
> > session (IPv6 full table). However, the session doesn't come up fully. I
> > do see a fair amount of UPDATE packets coming in, but then at a certain
> > point the connection gets closed and the routes purged again. All I can
> > find in the logs is "Optional attribute error", even with "debug all
> > all". Is there some other trick to find out what the actual problem is
> > with this session?
> Could you send the exact error message and the BIRD version?

Exact error message:

03-05-2011 10:49:22 <RMT> bgp1: Error: Optional attribute error

BIRD version:

Was 1.3.0 until this morning; after upgrading to 1.3.1 the error remains.

Ruben Laban

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