Virtualisation: Network problems

[Gottfried]

Hi Guixers,

Basic details of my Virtualisation setup:

Name: QEUMU/KVM
Libvirt URL: qemu:///System
Autoconnect yes
-------------------------------------
Network selection
It gives me 3 options:

1. I added a virtual network
        Name: network
        Device: virbr0 is there
        IPv4 configuration is there

Details:

<network>
  <name>network</name>
  <uuid>e324aabf-6ad4-4407-9028-82c96be96e0c</uuid>
  <forward mode="nat">
    <nat>
      <port start="1024" end="65535"/>
    </nat>
  </forward>
  <bridge name="virbr0" stp="on" delay="0"/>
  <mac address="52:54:00:16:e9:74"/>
  <domain name="network"/>
  <ip address="192.168.100.1" netmask="255.255.255.0">
    <dhcp>
      <range start="192.168.100.128" end="192.168.100.254"/>
    </dhcp>
  </ip>
</network>

2. Bridge device
3. Macvtap device

I guess the 1. option is the one I need. May be I made a mistake in 
adding a virtual network
-------------------------------------------------------------------

When I want to set up the QEMU/KVM network connection for the VM
and I want to run the last step(the 5/5 step) of installing an iso
it says:

Installation konnte nicht fertiggestellt werden/
Installation could not be completed:
Failed connect socket to
'/var/run/libvirt/virtlogd-sock':
No such file or directory
-------------------------------------------------------------------
Installation konnte nicht fertiggestellt werden: «Failed to connect 
socket to '/var/run/libvirt/virtlogd-sock': No such file or directory»

Traceback (most recent call last):
  File 
"/gnu/store/n3gyjzsylh2abc3ykxz9kf5335azgacr-virt-manager-3.2.0/share/virt-manager/virtManager/asyncjob.py", 
line 65, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File 
"/gnu/store/n3gyjzsylh2abc3ykxz9kf5335azgacr-virt-manager-3.2.0/share/virt-manager/virtManager/createvm.py", 
line 2001, in _do_async_install
    installer.start_install(guest, meter=meter)
  File 
"/gnu/store/n3gyjzsylh2abc3ykxz9kf5335azgacr-virt-manager-3.2.0/share/virt-manager/virtinst/install/installer.py", 
line 701, in start_install
    domain = self._create_guest(
  File 
"/gnu/store/n3gyjzsylh2abc3ykxz9kf5335azgacr-virt-manager-3.2.0/share/virt-manager/virtinst/install/installer.py", 
line 649, in _create_guest
    domain = self.conn.createXML(install_xml or final_xml, 0)
  File 
"/gnu/store/anh3nz3qr46f0ds5i1pswisrc9s3cf3f-python-libvirt-8.6.0/lib/python3.9/site-packages/libvirt.py", 
line 4442, in createXML
    raise libvirtError('virDomainCreateXML() failed')
libvirt.libvirtError: Failed to connect socket to 
'/var/run/libvirt/virtlogd-sock': No such file or directory
--------------------------------------------------------------------


But running the last step:

Failed to find a suitable default network
-----------------------------------------------

What are the problems here?
Any suggestions?

Gottfried

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