openstack vm ping 114.114.114.114
route add -net 0.0.0.0 netmask 0.0.0.0 gateway 192.168.0.131
route del -net 0.0.0.0 netmask 0.0.0.0 gateway 192.168.0.1
用一个例子来演示会更加清晰
route add -net 0.0.0.0 netmask 0.0.0.0 gateway 192.168.0.131
route del -net 0.0.0.0 netmask 0.0.0.0 gateway 192.168.0.1