[HECnet] Apples MAC OS X pcap library...

At 7:59 PM +0100 2/15/10, Johnny Billquist wrote: I'll try with a cable tonight to see if that works better than wireless... I was busy unprotoizing some C sources to feed the pre-ANSI DECUS C compiler. Since I see you are working on the bridge, I have made some further tests tonight. One thing I forgot to mention in my previous mail : On Mac OS/darwin, eth0 is enO. So, bridge.conf must contain 'local en0'. The program I use is not your bridge but a very similar one, intended to see how much work it would be for a Unix box to pretend to be a DECNET node. Indeed, I copied your pcap initialization part, filter included, then added my code. Assume machine A running node 1.1, machine B running node 1.2, machine C running nothing, all on a wired, switched LAN. When my program is running on machine C, I see all broadcast packets: Router-hello l2rout (DECNET packets, size 60) Lev-1-routing (DECNET packets, size 386 and 590x) Lev-2-routing (DECNET packets, size 152) A few LAN packets, size 60. Since I am on a switched network, I see none of the unicast packets, for example when I initiate a DECNET transfer between A and B. When my program is running on machine B, I see: Same packets as above (pcap_setdirection was called with PCAP_D_INOUT). Packets identified as data, data-ack, link-service, ils-ack by tcpdump. Until now, I have not seen a packet in tcpdump I have not seen in my program, which is basically yours for the pcap part. By the way, I'm looking for a document describing DECNET frames to dive a little deeper in that way. Any pointer will be appreciated. All tests use Apple's libpcap.dylib in /usr/lib, NOT libpcap.a in /usr/local/lib which was required to install simh on Mac OS X. I'm running Tiger, so you should have no problems using Leopard. Well, I realize that this is my first contribution to this list and maybe a short introduction is due. Here we go... I have been working with RSX-11M from '80 to '87. First in computer music research (GRM, Paris), then in pre-press/phototypesetting. Some old systems have been donated to me, noticeably SMS (Scientific Micro Systems) OEM LSI-11/73. As a hobby project, i've resurrected these systems, then linked them to simh via DECNET. A few details of the project here, unfortunately in french but I'm sure you will enjoy SEAGATE surgery http://www2.pescadoo.net/pdp/ and maybe DC600 meltdown: http://www2.pescadoo.net/pdp/photos/TANDBERG/P1010012.JPG Unfortunately, any interesting RSX software I could share (yet another full screen editor, a hierarchical filesystem for RSX and some funny drivers) are locked on a set of magtapes I did not manage to backup before the day tape drives lifted off earth for an secret destination. So is life... -- Jean-Yves Bernier