它尝试连接,然后说失败。
输出ifconfig
:
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 17185 bytes 1222073 (1.2 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 17185 bytes 1222073 (1.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0