IIRC, it's only Phase II, I know it doesn't
support Ethernet.
DECnet-RT 1.0 was Phase II, but I remember seeing an SPD for DECnet-RT 2.1 and I'm
pretty sure it was Phase III. You're still stuck with a serial DDCMP connection, but
at least it could interoperate with Phase IV nodes.
But if nobody has a copy, it's moot.
The TCP/IP package for RT-11 works very well.
I've heard that, but it just seems wrong to use TCP/IP instead of DECnet somehow...
Is the latest copy of the TCP/IP package this one?
https://shop-pdp.net/rthtml/tcpip.php
Bob