Kubernetes

[EDIT (solved)]: Turns out, cilium did not remove its network links, and somehow kept updating to my current CIDIR leading to a duplicate, removing the links worked.

I keep on getting issues with CNI and networking.. I just want my cluster to work.. anyways

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 flannel Here is my server arguments:

ExecStart=/usr/local/bin/k3s \
    server \
        --kubelet-arg=allowed-unsafe-sysctls=net.core.rmem_max,net.core.wmem_max,net.ipv4.ip_forward \
        --flannel-backend vxlan \
        --disable=traefik \
        --write-kubeconfig-mode 644

So I am using the default flannel backend, I tried repeatedly uninstalling then re-installing k3s, I deleted the current flannel interface with ip link, there is no other k3s instance is running, so why am I getting this issue?