Bob Armstrong wrote: Does anybody know if it s possible to use Johnny s bridge program to bridge into the simulated NI of a simh running on the same host as the bridge? I was going to try this out, but I don t want to waste time on it if it doesn t work. Thanks, Bob There's a patch which adds this functionality for OpenBSD and Linux. It's possible to add it for FreeBSD/NetBSD too, but I don't have working system to test it. http://pdp-11.nsk.ru/~form/files/bridge/bridge-tap.patch