刚刚安装了Archlinux，用的archlinux-2013.03.01-dual.iso镜像，最新的systemd将网卡名更改了，不在是原来默认的eth0/wlan0
我的ifconfig -a输出如下:
enp9s0: flags=4098 mtu 1500 ether 04:7d:7b:f8:25:9d txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73mtu 65536 inet 127.