In my local case, the bridge only have one UDP socket, and one local NIC. I can even reduce it to only run with the NIC, and I still see the problem. Johnny Jason Stevens wrote: Does you bridge have many connections to it? I recall last time I glanced thru the source code it wasn't using blocking sockets... perhaps its getting 'stuck' on a socket and effectively missing packets...? On Mon, Feb 15, 2010 at 11:00 AM, Johnny Billquist <bqt at softjar.se <mailto:bqt at softjar.se>> wrote: Very possibly. The annoying thing is the fact that tcpdump sees more packets than I (my bridge) do. Johnny Sampsa Laine wrote: Johnny, Not sure this is related but I tried to run SIMH on OS X over the wireless and DECNET didn't work - it might be more than just a pcap issue, the problem could be OS X's wireless NIC drivers or something. Sampsa On 15 Feb 2010, at 01:17, Johnny Billquist wrote: Do anyone have experience with Apples pcap library? It is supposed to be a plain bsd pcap, but I have a problem that I haven't figured out yet, and thought that maybe someone here already knows, so I don't have to go figure it out myself. Running my bridge program on MAC OS X, I don't get all packets, but I do get some of them. I can't see a pattern to it. This is done over wireless ethernet. The interesting thing is that tcpdump manages to see all of them. I'm very curious on why tcpdump manages to see packets that I don't see... Anyone have any ideas? Feel free to ask questions. I'll happily explain what I have tested, and done, and whatnot. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se <mailto:bqt at softjar.se> || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol