The fact that the bridge turns everything into a single Ethernet segment is
one of the reasons why I wrote my own user mode router. It interoperates
with the bridge and also SIMH DDCMP (although I haven't tried that for a
while and it looks like I haven't documented the fact either!).
Regards
Rob
  -----Original Message-----
 From: owner-hecnet at Update.UU.SE <owner-hecnet at Update.UU.SE> On Behalf
 Of Robert Armstrong
 Sent: 25 February 2020 04:13
 To: hecnet at Update.UU.SE
 Subject: RE: [HECnet] SIMH experience?
 
   GRE and Johnny's bridge software are two
good options. 
 
   The problem with Johnny's bridge is that it turns everything into a 
giant
  Ethernet segment.  Everybody appears to be adjacent to
everybody else.
 That's not realistic and doesn't scale well.
 
   GRE is a non-starter unless you have a Cisco router.
 
   If you don't like Multinet, write something better.  Make sure it works 
on a
  VAX...
 
 Bob