5、点击开启关闭按钮
6、有线连接恢复为初始连接设置
7、查看IP地址，发现IP地址恢复
pdsyw@pdsyw-pc:~/桌面$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: enp0s5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:1c:42:a0:d5:ca brd ff:ff:ff:ff:ff:ff
inet 10.211.55.50/24 brd 10.211.55.255 scope global dynamic noprefixroute enp0s5
valid_lft 1780sec preferred_lft 1780sec
inet6 fdb2:2c26:f4e4:0:21fb:134e:1f37:cd16/64 scope global temporary dynamic
valid_lft 604781sec preferred_lft 86152sec
inet6 fdb2:2c26:f4e4:0:7909:f2b7:1fc6:409/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 2591981sec preferred_lft 604781sec
inet6 fe80::4082:d556:10ee:353b/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/sit 0.0.0.0 brd 0.0.0.0
4: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN group default qlen 1000
link/tunnel6 :: brd ::
pdsyw@pdsyw-pc:~/桌面$
8.1、通过高级设置删除多余的有线连接
