On Tue, Jul 20, 2021 at 01:41:06PM +0300, Javor Kliachev wrote:
> Hello Ondrej, 
> 
> Many thanks for the advise. 
> 
> We have upgraded BIRD to the latest 1.6.8 version. 
> In this version seems the crash issue is resolved but the second issue with 
> - iBGP between RS-RS over IPv6 still exists. This BGP session is not able to 
> establish yet. 
> 
> In my LAB I have successfully replicated the issue. Both Route Servers are on 
> BIRD with latest version 1.6.8. They have the following IPv6 addresses 
> configured: 
> 
> RS1 IPv6 - 2001:67c:29f0::A:1:234:4 
> RS2 IPv6 - 2001:67c:29f0::A:1:234:5 
> 
> Here is the config fo each RS 
> 
> Seems the issue happens when remote peer is also BIRD. When remote peer is 
> router ( Cisco, Juniper, Quagga etc... ) the session is successfully 
> established. 
> On IPv4 iBGP between both RS works fine. So the issue related only with IPv6 
> stack. 
> 
> Initially before the crash we have added the following config below and RS 
> was stable but session was not able to establish. 
> We have made a capture of the traffic during the attempt of session 
> establishment and seems TCP handshake works but then not procced futher. 

Hello

Cannot replicate that, works for me. Do you have the problem with both
direct / multihop mode? Can you send me the capture? If you enable
'debug all' for sessions, what is in logs?

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santi...@crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."

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