> I have this network configuration with Linux Debian:
> 
> auto lo eth0
> iface lo inet loopback
> iface eth0 inet static
>          address 217.20.118.121
>          netmask 255.255.255.0
> up route add -net 217.20.117.0 netmask 255.255.255.0 dev eth0
> up route add default gw 217.20.117.1
> up mii-diag -A 100baseTx-FD
> ### END OF DEBCONF AREA.  PLACE YOUR EDITS BELOW; THEY WILL BE
> #PRESERVED.
> 
> Now, I have to move this to NetBSD.
> 
> What about route -net? As I think I cannot set the defaultroute with 
> "defaultroute=" in /etc/rc.conf, I added to /etc/rc.conf:

Sure you can.  What's wrong with 

	defaultroute="217.20.117.1"

> ifconfig_fxp0="inet 217.20.118.121 netmask 0xffffff00 up"
>
> and to /etc/rc.local, I added:
> 
> route add -net 217.20.117.0 -interface 217.20.118.121

I think you may want:

	route add -net 217.20.117.0 -interface fxp0

> route add default 217.20.117.1

I myself would use /etc/ifconfig.fxp0.  See ifconfig.if(5).  You can
configure the interface there, and I think you could add your routes, too,
using the ! prefix.  

I don't know what it means for an interface on network 217.20.118/24 to
have a router on 217.20.117/24.  If I could, I would either change the
netmask to make the latter reachable (0xfffff000), or add an address in
/etc/ifaliases to put fxp0 on 217.20.117/24.  Then I wouldn't have to muck
with route(8).  

HTH.  

--jkl