Ubuntu 20.04 Update bricked KVM Virt

I updated an older Ubuntu 18.04 LTS system to the latest LTS and had (among other things) Docker and KVM installed. KVM is actually quite nice if you "just need" a small VM (pfsense ;)). I actually prefer Proxmox and ESXi, but hey, the right tool for the right job.

After the upgrade to 20.04, kvm did not work anymore and I got a lot of lvm2 errors during apt update / apt upgrade sessions, so a short google later I found this. I was a bit nervous, but the fix did neither hurt my kvm nor my Docker instances

sudo apt purge lvm2 && sudo apt install lvm2

(The fix is deleting and reinstalling lvm2)

After reinstalling lvm2, I could successfully execute a virsh list and got my list of running KVM machines back:

 Id   Name      State
-------------------------
 1    pfsense   running

[pfSense] Install curl and wget

To install wget and curl onto pfSense,
use /usr/sbin/pkg_add -r wget and /usr/sbin/pkg_add -r curl
After that, use the command rehash

Alternative to wget is fetch avaible and installed

[pfSense] Access with SCP

If you need to access your pfSense with WinSCP (i.e.), activate SSH in pfSense first.
After that, you can log in with the Account root (!!!) and your Webconfiguration password.
Yeah, that saved my day after hours of trying to... "work-around".