Network slowdown on the hypervisor (fixed)


Today there was a considerable network slowdown on the libvirt hypervisor. Down to 10Kb/s for all connections. It turned out to be a wifi signal degradation problem and was fixed with:

sudo nmcli radio wifi off
sleep 5
sudo nmcli radio wifi on

I’ve seen such problems before but never on this hypervisor. I have no clue what causes the signal to degrade.