Cannot start VM with error "no network with matching name 'default'"

I update libvirt version and want to start VM with the new libvirt tools but I failed as follows.

> sudo virsh start kvm1
error: Failed to start domain kvm1
error: Network not found: no network with matching name 'default'
asked Dec 20, 2016 by harryxiyou (4,060 points)

1 Answer

Best answer

It seems that the default 'virbr0' is missing after I update libvirt so I solve this problem like following.

1, copy a 'virtbr0' config file from another server with same configuration.

$ sudo virsh net-dumpxml default
  <forward mode='nat'>
      <port start='1024' end='65535'/>
  <bridge name='virbr0' stp='on' delay='0'/>
  <ip address='' netmask=''>
      <range start='' end=''/>

2, remove the uuid in above configuration file and create it in the problem server.

# virsh net-create default.xml

3, Check the virtual bridge in the problem server.

# virsh net-list
 Name                 State      Autostart     Persistent
 default              active     no            no

Now, everything goes well.

You may also happen to following problem when you want to start default.

# virsh net-create ./default.xml 
error: Failed to create network from ./default.xml
error: internal error: Failed to initialize a valid firewall backend

Do following to solve it:

# apt-get install firewalld
# apt-get install ebtables
# apt-get install iptables
# /etc/init.d/libvirt-bin restart

The last step is to restart libvirtd.


answered Dec 20, 2016 by harryxiyou (4,060 points)
edited Dec 22, 2016 by harryxiyou

Please log in or register to answer this question.

Related questions

1 answer
asked Sep 29, 2016 by harryxiyou (4,060 points)
1 answer
asked Sep 18, 2016 by anonymous
1 answer
asked Jan 28, 2014 by anonymous
1 answer
1 answer
1 answer
asked Oct 2, 2014 by Eric Z Ma (41,910 points)
Copyright © SysTutorials. User contributions licensed under cc-wiki with attribution required.
Hosted on Dreamhost