[Simh] networking with simh on MacOS?

[Jeremy C. Reed]

> chgrp admin /dev/bpf*
> chmod g+rw /dev/bpf*

Thank you Larry. Now that makes my error go away and I have it attached:

sim> show xq eth
ETH devices:
  0  en0 (No description available)
  1  en1 (No description available)
sim> show xq
XQ, address=20001920-2000192F, no vector, MAC=08:00:2B:AA:BB:CC, 
type=DELQA, poll=100, not attached
sim> show version
VAX simulator V3.8-1 [64b data, 64b addresses, Ethernet support]
sim> attach xq en0 
Eth: opened en0
sim> show xq
XQ, address=20001920-2000192F, no vector, MAC=08:00:2B:AA:BB:CC, 
type=DELQA, poll=100, attached to en0


I found over ten webpages with ideas on how to configure the networking, 
but I am not suire which is relevant.  I am not able to ping my gateway. 
I am not able to ping my host's IP. I am not able to ping my virtual 
system's IP (from other system).

Should I be using the taptap?

I may try 
http://mailman.trailing-edge.com/pipermail/simh/2010-August/005884.html  
but I find it strange that I need to add additional software to use the 
networking.