docker添加多网卡的方法

ip addr del 192.168.1.22/24 dev eth0 
ip addr add 0.0.0.0 dev eth0 

ip link add br0 type bridge   # ip link delete br0 
ip link set br0 up            # ip link set br0 down 
ip link set eth0 master br0   # ip link set eth0 nomaster 

docker run -it --name testns centos 

nspid=$(docker inspect -f '{{.State.Pid}}' testns) 
ln -s /proc/${nspid}/ns/net /var/run/netns/${nspid} 

ip link add tt0 type veth peer name tt1 

ip link set dev tt1 master br0 
ip link set dev tt1 up 

ip link set dev tt0 name eth1 netns ${nspid} 
ip netns exec ${nspid} ip link set dev eth1 up 
ip netns exec ${nspid} ip addr add 10.65.120.48/16 dev eth1 
ip netns exec ${nspid} ip addr add 10.65.120.49/16 label eth1:1 dev eth1