FEATURE: OpenVPN does not work due to missing CONFIG_TUN

[feeRnt]

-- OS: Arch Linux
-- Affected branch: ps4-linux-6.15.y

VPN connections relying on OpenVPN do not work with the current kernel configuration; leading to the error:
ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such file or directory (errno=2)

Checking the kernel config gives:

zcat /proc/config.gz | grep CONFIG_TUN
# CONFIG_TUN is not set
# CONFIG_TUN_VNET_CROSS_LE is not set

CONFIG_TUN is required for TUN/TAP connections that OpenVPN uses, so it should be enabled in the config to allow for this protocol.
I'm not aware if other config options are also missing that would cause a problem.