1、
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
iface eth0 inet dhcp
# This is an autoconfigured IPv6 interface
iface eth0 inet6 auto
auto eth0
auto br0
iface br0 inet static
address 192.168.7.64
netmask 255.255.255.0
gateway 192.168.7.254
bridge_ports eth0
auto eth0.101
auto br101
iface br101 inet manual
bridge_ports eth0.101
bridge_stp off
bridge_maxwait 0
bridge_fd 0
2、手动在后天把在portal生成的vnet12和vnet13加入这个网桥
brctl addif br101 vnet12
brctl addif br101 vnet13
3、ok