[HECnet] Re: Decnet connectivity issue

All the VAXen I’ve used or configured (including SIMH instances) have a hardware address like 08:00:2B:xx:yy:zz where the xx, yy and zz come from the label on the network interface or are assigned by me. I don’t have to work out MAC addresses that match the DECnet address since the software sets these when it initialises. My SIMH ini files have For Unibus e.g. VAX780 - set xu enable set xu type=DELUA set xu mac=08-00-2B-11-07-80 attach xu eth0 For Qbus e.g. VAX3900 - set xq enable set xq mac=08-00-2B-11-06-50 attach xq eth0 Up to five SIMH instances run fine under Raspberry Pi OS bookworm 64-bit (aarch64) on a Pi3B+ that also runs pydecnet. Tony Tony Nicholson <tony.nicholson(a)computer.org>