Troubleshooting "Optional attribute error"

Ondrej Zajicek santiago at
Fri Apr 29 00:54:14 CEST 2011

On Wed, Apr 27, 2011 at 05:21:21PM +0200, Ruben Laban wrote:
> Hi,
> 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?

Elen sila lumenn' omentielvo

Ondrej 'SanTiago' Zajicek (email: santiago at
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3,
"To err is human -- to blame it on a computer is even more so."
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