I seem to remember that for System V TCP/IP that you needed STREAMS first, so that was SVR3. It may have been back potred but I don't know. And after that, then you had a choice of Wollongong or Lachman implementations. Bell Labs had their own as well, but I believe that was only available internally. Amdahl UTS used Lachman (which I kind of remember might have been Convergent's code), but at Indian Hill it was removed and the home grown one put in. I don't know who did the kernel code, but the user land utilities were BSD ports done by Ralph Knag in Murray Hill. This was an interesting setup as it was System/370 hardware so it had a channel to ethernet device from Spartacus, probably a K200 since there was a "k200" command to fiddle with it. I largely ignored TCP/IP initially as on the first UTS release, just telneting out of it used a ton of system CPU, something would loop in the kernel instead of going to sleep. Besides we had Datakit for interactive connectivity, and NSC HyperChannel for intra-datacenter file transfer (which I remember being something like 50mbs in 1987) For the original SVR4, the official porting base was the 3b2 and that group from Summit (which was later spun off as Unix Systems Laboraties (USL)) used Lachman as well for it's TCP/IP. _______________________________________________ TUHS mailing list TUHS(a)minnie.tuhs.org https://minnie.tuhs.org/mailman/listinfo/tuhs