bird6 bgp - no listening socket

[Adrian Czapek]

Hello,

bird6.conf:
--------------------------------------------------------------------------
log syslog all;
router id 80.50.131.218;
listen bgp address 2a03:6600:3::2 port 179 dual;

protocol kernel {
         scan time 20;
#       import none;
         export all;
}

protocol static {
         route 2a03:6600:4::/48 reject;
}

protocol bgp leszczyny {
         local as 44124;
         neighbor 2a03:6600:3::1 as 44124;
         hold time 240;
         startup hold time 240;
         connect retry time 120;
         keepalive time 80;
         start delay time 5;
         error wait time 60, 300;
         error forget time 300;
         disable after error;
         path metric 1;
         default bgp_med 0;
         default bgp_local_pref 0;
         gateway direct;

         export all;
         import all;
}
----------------------------------------------------------------------------------------

sadly, BGP is not working, I found that there is no listening socket 
created on 2a03:6600:3::2 and it refuses connections from 2a03:6600:3::1:

15:10:48.187179 IP6 2a03:6600:3::1.49296 > 2a03:6600:3::2.179: S 
515376837:515376837(0) win 5760 <mss 1440,sackOK,timestamp 722432390 
0,nop,wscale 6>
15:10:48.191276 IP6 2a03:6600:3::2.179 > 2a03:6600:3::1.49296: R 0:0(0) 
ack 515376838 win 0

There is already bird (v4) running on that machine listening on 0.0.0.0:179

How to solve this? Can both bird and bird6 (both with bgp protocol 
configured)  on the same machine?

Regards
-- 
Adrian Czapek