Okay, this is weird.

I am seeing tailscaled spiking up to 250% CPU usage every other minute, with up to 60 MBit/s outgoing traffic on the tailscale0 interface… and on the wg0 interface I see the same amount of traffic during that period.

I now disabled wireguard and the issue is gone.

But I have absolutely NO idea why this is happening, what causes it, and why it (seemingly) suddenly started - I did not have this issue earlier today. All I did in between was update the unstable channel, but all packages involved here (tailscale, wireguard) are from stable. So… 🤔 I am at loss…

#tailscale #wireguard #linux #linuxnetworking #networking #sysadmin #nixos