addovs

#!/bin/bash

set -x
IFNAME=$1
if [ "$2" == "-i" ]; then
  CONTAINER_IFNAME=$3
  shift 2
else
  CONTAINER_IFNAME=eth1
fi
GUESTNAME=$2
IPADDR=$3

NSPID=$(docker inspect --format='{{ .State.Pid }}' $GUESTNAME)

# Create named namespace
[ ! -d /var/run/netns ] && mkdir -p /var/run/netns
[ ! -f /var/run/netns/$NSPID ] && ln -s /proc/$NSPID/ns/net /var/run/netns/$NSPID

GUEST_IFNAME=do${NSPID}${CONTAINER_IFNAME}

ovs-vsctl add-port $IFNAME $GUEST_IFNAME || echo "$GUEST_IFNAME exists"
ovs-vsctl set Interface $GUEST_IFNAME type=internal
ip link set dev $GUEST_IFNAME netns $NSPID
ip netns exec $NSPID ip link set dev $GUEST_IFNAME name $CONTAINER_IFNAME
ip netns exec $NSPID ip link set dev $CONTAINER_IFNAME up
ip netns exec $NSPID ip addr add $IPADDR dev $CONTAINER_IFNAME