Hello! I am using k3s with the default flannel, i am getting this issue:

Apr 28 17:14:30 raspberrypi k3s[2373903]: time="2025-04-28T17:14:30+12:00" level=error msg="flannel exited: failed to register flannel network: failed to configure interface flannel.1: failed to set interface flannel.1 to UP state: address already in use"

How do i see what is using my flannel? and how to delete it, i found the flannel interface with ip link, and deleted it, i also tried re-installing k3s, that did not help. There is no other k3s instance running