Magodellaneve - 2007-07-02

I try to compile for osx (ppc 10.4.8 )reading this post : https://sourceforge.net/forum/forum.php?thread_id=1562565&forum_id=320725

when i start imsniff : ./imsniff -vvv en0

i see this error :
Mon Jul  2 11:42:28 2007 | 3 | Real size = 158, current size=158
Mon Jul  2 11:42:28 2007 | 3 | 207.46.27.188:1863 -> 192.168.1.22:49268
Mon Jul  2 11:42:28 2007 | 3 | Unknown data from an unknown conversation, skipping.
Mon Jul  2 11:42:28 2007 | 3 | Processing packet with ID: 475
Mon Jul  2 11:42:28 2007 | 3 | Packet is not from a known conversation
Mon Jul  2 11:42:28 2007 | 3 | Real size = 28, current size=28
Mon Jul  2 11:42:28 2007 | 3 | 192.168.1.22:49268 -> 207.46.27.188:1863
Mon Jul  2 11:42:28 2007 | 3 | Unknown data from an unknown conversation, skipping.

and nothing was logged.

what can i do?

thank you.