Universal BlueUB
Universal Blue•10mo ago
StarMage

Can't create a virtual network in KVM Manager

I installed all the nescessary KVM stuff via rpm-ostree. I can create virtual machines just fine, but I can't create virtual networks. How can I fix it?

Error message:
Error creating virtual network: error creating bridge interface virbr0: Operation not permitted

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 71, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
    ~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/virt-manager/virtManager/createnet.py", line 428, in _async_net_create
    netobj.create()
    ~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/site-packages/libvirt.py", line 3569, in create
    raise libvirtError('virNetworkCreate() failed')
libvirt.libvirtError: error creating bridge interface virbr0: Operation not permitted
Screenshot_From_2025-03-14_22-18-21.png
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