ioctl(TUNSETIFF): Device or resource busy
ip tuntap add test_tun mode tap user root
ioctl(TUNSETIFF): Device or resource busy
#!/bin/sh set -x switch=virbr0 if [ -n "$1" ];then ip tuntap add $1 mode tap user `whoami` ip link set $1 up sleep 0.5s ip link set $1 master $switch exit 0 else echo "Error: no interface specified" exit 1 fi
原来是test_tun已经存在了
ip link del test_tun