在/root/route上建立文件，如下内容
route add -net 0/0 gw 10.252.64.73
ip route add 192.168.1.0/24 dev eth3 src 192.168.1.30 table 1
ip route add default via 192.168.1.254 table 1
ip route add 10.252.64.72/29 dev eth2 src 10.252.64.74 table 2
ip route add default via 10.252.61.73 table 2
ip rule add from 192.168.1.30 table 1
ip rule add from 10.252.64.74 table 2
[root@localhost ~]# cat /etc/rc.local
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.
touch /var/lock/subsys/local
sh /root/route &