这是 ifconfig 的输出
# ifconfig
enp0s3 Link encap:Ethernet HWaddr 08:00:27:ef:b6:e6
inet addr:192.168.2.3 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::cf19:776a:4d5c:36e0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:713069 errors:0 dropped:0 overruns:0 frame:0
TX packets:6767 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:45869812 (45.8 MB) TX bytes:667164 (667.1 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:1108 errors:0 dropped:0 overruns:0 frame:0
TX packets:1108 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:86846 (86.8 KB) …