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SpacetimeBull

Member

Registered: 2021-02-13

Posts: 25

Virt-Manager: "Unable to create bridge virbr0: Package not [SOLVED]

I am trying to start up my macOS kvm and when I receive the following message which prevents the vm from starting up: "Unable to create bridge virbr0: Package not installed". I have a working internet connection via Ethernet. When I try to remove the network and re-add it(through virtmanager) it asks me if I would like to start the network and then it shows the same error message. The full log provided by virtmanager:

"Could not start virtual network 'default': Unable to create bridge virbr0: Package not installed
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/device/netlist.py", line 203, in _check_network_is_running
    netobj.start()
  File "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line 57, in newfn
    ret = fn(self, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/object/network.py", line 69, in start
    self._backend.create()
  File "/usr/lib/python3.9/site-packages/libvirt.py", line 3436, in create
    raise libvirtError('virNetworkCreate() failed')
libvirt.libvirtError: Unable to create bridge virbr0: Package not installed"

Any idea on why this is happening and what I can do to fix it?

Last edited by SpacetimeBull (2021-04-14 20:20:01)

loqs

Member

Registered: 2014-03-06

Posts: 17,376

Re: Virt-Manager: "Unable to create bridge virbr0: Package not [SOLVED]

Have you read through Libvirt#Server?

SpacetimeBull

Member

Registered: 2021-02-13

Posts: 25

Re: Virt-Manager: "Unable to create bridge virbr0: Package not [SOLVED]

Yes I have all the packages mentioned in that section, just to add if I run the vm through a start sh script directly to qemu it starts.

loqs

Member

Registered: 2014-03-06

Posts: 17,376

Re: Virt-Manager: "Unable to create bridge virbr0: Package not [SOLVED]

From a web search https://github.com/kubernetes/minikube/ … -508918995 lead me to https://bugzilla.redhat.com/show_bug.cgi?id=524880

Which seems to indicate the issue is lack of kernel support.  Which could be due to a custom kernel or performing a kernel update and have yet to rebooted.

SpacetimeBull

Member

Registered: 2021-02-13

Posts: 25

Re: Virt-Manager: "Unable to create bridge virbr0: Package not [SOLVED]

Resolved, you may close. I could not find a solution to this but I used a macvtap device and dida  loopback and it solves the issue.

Last edited by SpacetimeBull (2021-04-14 20:19:45)

shipreck

Member

Registered: 2023-04-14

Posts: 1

Re: Virt-Manager: "Unable to create bridge virbr0: Package not [SOLVED]

had the same issue.

just installed all the dependencies correctly and a reboot (I updated the system about an hour ago, a reboot was due ) did the trick (missed this package "dnsmasq")