http://digitalsr.i2p/computing/microvax.html
On Linux host, forward traffic for interfaces:
# net.ipv4.conf.all.forwarding = 1
# Masquerade all private address space traffic:
# iptables -t nat -A POSTROUTING -m comment --comment "Masquerade all rfc1918 addresses" -s 192.168.0.0/16 -j MASQUERADE
# In VMS, add name servers, and assign host addresses.