es:
eth0 > internet (10.151.200.0)
eth1 > intranet (192.168.1.0)
Remove GATEWAY from internal configuration /etc/sysconfig/network-scripts/ifcfg-eth1
Set GATEWAY only on eth0 configuration /etc/sysconfig/network-scripts/ifcfg-eth0
create file configuration /etc/sysconfig/network-scripts/route-eth1 to force route for specific subnet
192.168.1.0/24 192.168.1.1 dev eth1