我们查看 ifconfig
bash
[zk@VM-24-17-centos ~]$ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.24.17 netmask 255.255.252.0 broadcast 10.0.27.255
inet6 fe80::5054:ff:fe3a:de5c prefixlen 64 scopeid 0x20<link>
ether 52:54:00:3a:de:5c txqueuelen 1000 (Ethernet)
RX packets 18977816 bytes 3929248942 (3.6 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 18031611 bytes 3200830442 (2.9 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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 4006943 bytes 702420170 (669.8 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4006943 bytes 702420170 (669.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
这里有一个ip地址,是内网IP
bash
10.0.24.17
但是我们登录腾讯云的ip地址跟这个完全不一样
类似于
cpp
119.29.219.xxx
我们跨主机想使用upd进行通信的时候,用的是下面这个ip。后面详细讲