In my opinion, this should have been added to the web interface LONG ago…. but the IPCop folks seem determined to keep it as a SOHO firewall and nothing more….. and the vast majority of SOHO setups only deal with one subnet
route add -net 172.31.0.0 netmask 255.255.0.0 gw 192.168.0.252
To make it stick, add this command to the end of /etc/rc.d/rc.netaddress.up
Maybe they’ll finally add this to the GUI in 1.5….. hopefully a lot of other stuff as well, before the project stagnates and is surpassed by pfSense.