-route add 192.168.$SUB.160 gw 192.168.$SUB.231
-route add 192.168.$SUB.231 gw 192.168.$SUB.160
-route add 192.168.0.53 gw 192.168.$SUB.160
+ip route add 192.168.$SUB.160 via 192.168.$SUB.231 dev eth0
+ip route add 192.168.$SUB.231 via 192.168.$SUB.160 dev eth0
+ip route add 192.168.0.53 via 192.168.$SUB.160 dev eth0