Wireguard doesn't work

[c25]

This is probably due to kernel headers being missing/mismatched.

• Install wireguard via apt (this is tested on debian unstable)
• configure your connection
• run wg-quick up wg0
• receive the following error(s)

Error: Unknown device type.
Unable to access interface: Protocol not supported

This appears to be because we're lacking the wireguard kernel module.

installing wireguard-dkms (or running dpkg-reconfigure wireguard-dkms) fails/skips as the kernel headers for the running kernel are not installed.

$uname -r
5.10.106

linux-headers-amd64 5.18.16-1 are installed

Even if we could install the correct version I doubt they would match the running (chromebook) kernel.

[jkaplavka]

Yes it's custom kernel modified by google so mainline headers doesn't work, but since kernel 5.6 there is a wireguard module build in. I'm on kernel 5.15 with working wireguard. Try this sudo modprobe wireguard if that doesn't work you will have to change kernel config and rebuild kernel with wireguard module https://cb-linux.github.io/breath/docs.html#/kernel?id=new-build-script, this config needs to be enabled https://www.kernelconfig.io/search?q=CONFIG_WIREGUARD&kernelversion=5.10.137&arch=x86