install.sh now defaults to AWG_GEN=3.1: an incompatible module or kernel
fails with diagnostics instead of silently falling back to 2.0 and handing
out a server with weaker obfuscation. AWG_GEN=auto keeps the old fallback
for old kernels, AWG_GEN=2.0 still forces 2.0.
Servers already installed on 2.0 no longer need a reinstall: POST
/awg/upgrade (button in the users tab) backs up awg1.conf, rewrites
[Interface] with HeaderProtectionKey and the 3.1 block install.sh writes,
raises any S1-S4 below 12 (header protection needs a 12-byte nonce and the
module only reports "Invalid argument"), restarts the interface and
reissues every vpn:// key. Bringing the interface up is the only real proof
the kernel accepted the params, so a failure restores the previous conf and
brings 2.0 back up. Reissue is not optional: 2.0-era keys stop working the
moment the generation changes.
restartAwg() now re-reads the obfuscation params, generation and keepalive
from awg1.conf before syncing peers. The conf can change while the
interface is down, and a stale CONFIG.gen meant new keys were built on the
old params.
README: install from git.ma7neko.ru (Gitea) instead of raw.githubusercontent,
and document the 3.1 default with the AWG_GEN=auto escape hatch.
maeneko
38e76da84f