RHEL7 配置或添加临时IP地址测试：
[root@rhel7 Desktop]# ip a s enp0s3 ---查看原网卡IP 为192.168.1.7 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:73:7a:97 brd ff:ff:ff:ff:ff:ff inet 192.168.1.7/24 brd 192.168.1.255 scope global enp0s3 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe73:7a97/64 scope link valid_lft forever preferred_lft forever [root@rhel7 Desktop]# ifconfig enp0s3 192.168.1.8 ---设置临时ip为192.168.1.8 [root@rhel7 Desktop]# ip a s enp0s3 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:73:7a:97 brd ff:ff:ff:ff:ff:ff inet 192.168.1.8/24 brd 192.168.1.255 scope global enp0s3 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe73:7a97/64 scope link valid_lft forever preferred_lft forever [root@rhel7 Desktop]# ip addr add dev enp0s3 192.168.1.222 --添加一个临时ip 192.168.1.222 [root@rhel7 Desktop]# ip a s enp0s3 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:73:7a:97 brd ff:ff:ff:ff:ff:ff inet 192.168.1.8/24 brd 192.168.1.255 scope global enp0s3 valid_lft forever preferred_lft forever inet 192.168.1.222/32 scope global enp0s3 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe73:7a97/64 scope link valid_lft forever preferred_lft forever [root@rhel7 Desktop]# nmcli connection down enp0s3 --重启网卡后恢复为原来的IP192.168.1.7 Connection 'enp0s3' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/6) [root@rhel7 Desktop]# nmcli connection up enp0s3 Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7) [root@rhel7 Desktop]# ip a s enp0s3 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:73:7a:97 brd ff:ff:ff:ff:ff:ff inet 192.168.1.7/24 brd 192.168.1.255 scope global enp0s3 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe73:7a97/64 scope link valid_lft forever preferred_lft forever [root@rhel7 Desktop]#