#!/bin/bash

function error 
{
	echo $1 >&2
	exit 1
}

if [ -z "$2" ]; then
	error "Usage ${0##*/} <bridge> <port>"
fi

if ovs-vsctl list-ports "$1" | grep -q "^$2$"; then
	exit 0
fi
ovs-vsctl add-port "$1" "$2" -- set interface "$2" type=tunnel