[HECnet] DECNET for RT-11?

YEP!! Or at least I am fairly confident that I know where a copy should be located. However, at the very least, anyone receiving a copy from that source would, almost certainly, be required to prove beyond a reasonable doubt that they had a license from DEC or Mentec. And even then, your first born might also be required as a suitable consideration. I can always ask if the answer is important. If you can describe the overall situation, that might help as well. There might be another source for RT-11 DECNET, but as far as I can remember, there was no success in the past. Would the TCP/IP stack that Johnny Billquist has made available for RSX-11 be suitable for RT-11 instead of DECNET? There is a TCP/IP implementation that is decades old which is available for RT-11 and maybe TSX-Plus. Since I have never had the hardware set up, I have not attempted to check it out.