Wireguard not working on reboot

[JedMeister]

It has been reported in our forums that the WireGuard appliance works fine, but following a reboot it no longer works.

Part of the issue (the wg-quick@wg0.service) is covered in #1610 but more is required.

It turns out that net.ipv4.ip_forward also needs to be enabled in /etc/sysctl.conf.
(see this comment)

To summarize, this needs to be done to workaround (both of) the issue(s):

systemctl enable --now  wg-quick@wg0.service
sysctl -w net.ipv4.ip_forward=1

To fix the build code, this will probably do it:

systemctl enable wg-quick@wg0.service
sed -i "\|#* *net.ipv4.ip_forward=| s|^#* *\(net.ipv4.ip_forward *=\).*|\11|" /etc/sysctl.conf

(Note that the build code changes could also be applied to an existing VM, but it will require a reboot to start working).

[OnGle]

ping, what's the status on this issue @JedMeister?

[JedMeister]

Thanks for the bump @OnGle!