QEMU/KVM no open network

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Thomsus
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QEMU/KVM no open network

Post by Thomsus »

Hi, I have previously been running virtual machines in QEMU/KVM with no issues on my Linux Mint computer. However, that's some time ago, before the latest upgrade. Now I can no longer connect my VM's to the LAN, like they were physical computers connected to the same LAN.

In Virtual Machine Manager -> Edit -> Connection Details -> Virtual Networks:
I click +
The "Create virtual network" window appears.
I leave the name as is, and change Mode to Open.
In IPv4 configuration: I tick "Enable IPv4", and enter the network ID for the LAN intranet "172.16.0.0/16", and de-select the "Enable DHCPv4" as my LAN already has DHCP.
I click Finish, and get this error message (see attached screenshot): Error creating virtual network: Internal error: Network is already in use by interface...

Of course that network ID is already in use by the network interface, otherwise my computer wouldn't connect to anything :-)
So, any ideas?

It's running Linux Mint 21 Cinnamon 5.4.12
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error creating vitual network.png
Last edited by LockBot on Sun Mar 19, 2023 10:00 pm, edited 1 time in total.
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