Steps to delete virbr0 network card on CentOS7
Note: I have configured bridge under CentOS7 before. Now after changing the bridge mode to normal mode, you can still see a lot of junk information when checking the network card. If you want to completely delete the unwanted network card configuration information, do the following:
[root@linux-node1 ~]# ip add list 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 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 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:9b:7d:d6 brd ff:ff:ff:ff:ff:ff inet 10.10.10.11/24 brd 10.10.10.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe9b:7dd6/64 scope link valid_lft forever preferred_lft forever 4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000 link/ether 52:54:00:f4:24:05 brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN qlen 1000 link/ether 52:54:00:f4:24:05 brd ff:ff:ff:ff:ff:ff
View network list:
[root@linux-node1 ~]# virsh net-list Name StateAutostart Persistent ---------------------------------------------------------- defaultactive yes yes
Use "virsh net-destroy default" to delete
[root@linux-node1 ~]# virsh net-destroy default Network default destroyed
Remove from configuration file
[root@linux-node1 ~]# virsh net-undefine default Network default has been undefined
Restart libvirtd service
[root@linux-node1 ~]# systemctl restart libvirtd.service [root@linux-node1 ~]# virsh net-list Name StateAutostart Persistent ---------------------------------------------------------- [root@linux-node1 ~]# ip add list 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 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 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:9b:7d:d6 brd ff:ff:ff:ff:ff:ff inet 10.10.10.11/24 brd 10.10.10.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe9b:7dd6/64 scope link valid_lft forever preferred_lft forever
Check again and find that unnecessary information has been cleared, which makes it much cleaner
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