BuildRoot vexpress-a9 boot from NFS ifup

qemu-ifup

#!/bin/sh

set -x

if [ -n "$1" ];then
	ip link add ${SWITCH} type bridge
	sleep 1s
	ip tuntap add $1 mode tap user `whoami`
	sleep 0.5s
	ip link set dev ${SWITCH} up
	sleep 0.5s	
	ip link set dev ${ETHERNET_PORT} master ${SWITCH}
	sleep 0.5s
	ip link set $1 up
	sleep 0.5s
	ip link set $1 master ${SWITCH}
	ip address delete ${HOST_IP}/24 dev ${ETHERNET_PORT}
	ip address add ${HOST_IP}/24 dev ${SWITCH}
	ip route add default via ${HOST_IP} dev ${SWITCH}
	exit 0
else
	echo "Error: no interface specified"
	exit 1
fi