ip link list
ip address show
ip route show
route -n
ip neigh show
ping -c 1 espa043 (add to arp)
ip neigh delete 9.3.76.43 dev eth0
ip rule list
ip route list table local
ip route list table main
vi /etc/iproute2/rt_tables
原文：http://www.cnblogs.com/iamgoodman/p/4218831.html