$IPTABLES -t nat -A POSTROUTING -o eth2  -s 192.168.253.0/24 -j SNAT --to-source 200.32.200.32
$IPTABLES -t nat -A POSTROUTING -o eth3  -s 192.168.253.0/24 -j SNAT --to-source 200.32.201.32
$IPTABLES -t nat -A POSTROUTING -o eth4  -s 192.168.253.0/24 -j SNAT --to-source 200.32.202.32