Mandriva Linux uses a script /etc/sysconfig/network-scripts/ifup-routes to parse the file for static routes for each interface. This doesn't seem to be very well documented, so I'll do it here.

The files used to configure the routes are /etc/sysconfig/network-scripts/route-<dev> (e.g. /etc/sysconfig/network-scripts/route-eth0) and they contain the variables:

ADDRESS0=<network address for route 0>
NETMASK0=<netmask for route 0>
GATEWAY0=<gateway address for route 0>
ADDRESS1=<network address for route 1>
NETMASK1=<netmask for route 1>
GATEWAY1=<gateway address for route 1>

example: (route-eth0 for eth0)

ADDRESS0=10.0.1.0
NETMASK0=255.255.255.0
GATEWAY0=192.168.1.4
ADDRESS1=10.0.2.128
NETMASK1=255.255.255.128
GATEWAY1=192.168.1.5