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This article is about how to uninstall the virbr0 virtual network card. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

In the process of using dual-computer software, if the system is the xen kernel after the centos 5.x default system installation is completed, then there will be virtual network cards (vethx, vif0.x, virbr0, xenbr1, etc.) after xen kernel boot.

This will directly result in the same IP address on both machines of the dual-computer software (the IP address of the virbr0 Nic is 192.168.122.1). Therefore, it will lead to the phenomenon that the standby will not take over when the host in the dual-computer system shuts down. Therefore, you need to uninstall the virbr0:

1. First, take out the JOB of the dual computer, execute the yum groupremove "Virtualization" command to try to uninstall the virbr0 device, and use ifconfig-a to check whether the virbr0 device still exists.

2. If you still haven't uninstalled the virbr0 network card, execute this command again: yum remove libvirt, use ifconfig-a to check whether the network card virbr0 is uninstalled.

3. If you execute the yum error report, you can vi / etc/yum/plugincon.d/rhnplugin.conf and then change the enable=1 in the file to enable=0, in order to disable this function first, and then execute yum remove libvirt to uninstall.

To delete an old error by using yum, do step 3 first, then execute 1 and 2, and generally execute 1. After the execution is complete, the restart machine notices that the virtual network card disappears, but a device of sito appears.

Do not know what it does, check, SIT is IPv6-in-IPv4 tunnel interfaces, this interfaces (interface or interface) is also known as sitx, sit is the abbreviation of "Simple Internet Transition". It can cram IPv6 packets into IPv4 and reach another location through IPv4. Sit0 cannot be used on a dedicated tunnels. With the lsmod command, it can be found that the system has loaded the ipv6 module.

Generally speaking, it is useless and will slow down the speed of surfing the Internet. You can modify / etc/modprobe.d/aliases comment out the alias net-pf-10 ipv6 line and add a line below the alias net-pf-10 off to uninstall and restart the machine. The virtual network card does not exist.

Thank you for reading! This is the end of the article on "how to uninstall the virbr0 virtual network card". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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