cant create network with virt-manager

[Laine Stump]

On 9/21/20 3:58 PM, Marko Horn wrote:
> 
> hello list,
> i cant create an isolated network with the virt-manager.
> 
> installed version virt-manager 3.0.0
> installed version libvirt 6.2.0
> 
> output in error-message:
> 
> Error creating virtual network: internal error: Failed to apply firewall 
> rules /sbin/iptables -w --table filter --insert LIBVIRT_INP 
> --in-interface virbr3 --protocol tcp --destination-port 67 --jump 
> ACCEPT: iptables: No chain/target/match by that name.

I may be remembering incorrectly (I think there might have been as 
similar bug of the same vintage), but it is possibly caused by this bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1813830

It was fixed upstream in libvirt-6.4.0. If you're building from upstream 
yourself, then grab the latest master. If you're running a downstream 
distro build, ask them to backport the patches detailed in the above 
(Fedora) bug report.


> 
> 
> Traceback (most recent call last):
>    File "/usr/share/virt-manager/virtManager/asyncjob.py", line 66, 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/lib/python3.7/site-packages/libvirt.py", line 3174, in create
>      if ret == -1: raise libvirtError ('virNetworkCreate() failed', 
> net=self)
> libvirt.libvirtError: internal error: Failed to apply firewall rules 
> /sbin/iptables -w --table filter --insert LIBVIRT_INP --in-interface 
> virbr3 --protocol tcp --destination-port 67 --jump ACCEPT: iptables: No 
> chain/target/match by that name
> 
> any ideas?
> 
> thank you
> marko
> 
>