On Wed, 11 Nov 2009 17:28:33 +0100, you wrote: However, if you configure my bridge program for it, it can pass on LAT frames just as well as DECnet, and it works just fine. And the same goes for MOP, by the way. And, if someone really cares, the bridge could also pass LAST (InfoServer and maybe Pathworks) frames as well: just add Ethertype 0x8041 to its packet filter, but be sure to correct a little bug or it will not work: the *data member inside the DATA structure has to be declared unsigned. :-P Been there, done that: it's slow, but works like a champ. :-) Cheers, G.