system adds a route itself

Hi…
We have developed a devn driver which is mounted into io-net … The interface shows up fine and everything works good. BUT when I do netstat -rn I see that a route to lo0 is added somehow. 192.168.0.1 is the address I am assigning to the interface that my devn driver is creating.

Internet:
Destination Gateway Flags Refs Use Mtu Interface
default 77.177.39.1 UG 0 0 - en1
127.0.0.1 127.0.0.1 UH 0 0 33212 lo0
192.168 192.168.0.1 U 0 0 - dpd0
192.168.0.1 192.168.0.1 UH 0 0 - lo0

Can someone tell me why that could be? here is the result of ifconfig:

lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 33212
capabilities=7<IP4CSUM,TCP4CSUM,UDP4CSUM>
enabled=0<>
inet 127.0.0.1 netmask 0xff000000
dpd0: flags=843<UP,BROADCAST,RUNNING,SIMPLEX> mtu 1500
inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
en1: flags=8a43<UP,BROADCAST,RUNNING,ALLMULTI,SIMPLEX,MULTICAST> mtu 1500
address: 00:80:c8:3a:96:a2
inet 147.177.39.101 netmask 0xffffff00 broadcast 147.177.39.255