Adding a 2nd default route (linux)

#!/bin/bash
ip route add 10.0.0.0/24 dev eth1 src 10.0.0.1 table admin
ip route add default via 10.0.0.138 dev eth1 table admin
ip rule add from 10.0.0.1/32 table admin
ip rule add to 10.0.0.1/32 table admin
ip route flush cache