Let’s give PRO/VENIX a barely adequate, pre-C89 TCP/IP stack (featuring Slirp-CK)

Only a few weeks ago, I linked to Cameron Kaiser’s excellent deep dive into the DEC Professional 380 running PRO/VENIX, and now we have a follow-up.

Fortunately, today we have AI we have many more excellent and comprehensive documents on the subject, and more importantly, we’ve recently brought back up an oddball platform that doesn’t have networking either: our DEC Professional 380 running the System V-based PRO/VENIX V2.0, which you met a couple articles back. The DEC Professionals are a notoriously incompatible member of the PDP-11 family and, short of DECnet (DECNA) support in its unique Professional Operating System, there’s officially no other way you can get one on a network — let alone the modern Internet. Are we going to let that stop us?
↫ Cameron Kaiser

No. The answer is always no. If you’ve ever wanted to know what’s involved in setting up a custom TCP/IP stack using serial on a 40 year old UNIX workstation, your very specific desires are hereby met.