As far as the DEQNA goes, this is its config:
# ifconfig qe0
qe0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 192.168.2.30 netmask 0xffffff00 broadcast 192.168.2.255
#
and route table:
route show
Routing tables
Internet:
Destination Gateway Flags
default 192.168.2.1 UG
localhost 127.0.0.1 UH
192.168.2.0 link#1 U
mynetwork 18:1e:78:3:3c:20 UH
#
It is the same whether I use either xcvr. I cannot find any data on
what DEQNA parameters I can change on any NetBSD documentation.