Debian script don't cover Debian 12

[ZEROF]

Hi,

I tried to use your script on Debian 12, but I detected few issues

1. Script must install iptables, package is missing
2. Script try to stop "systemctl stop systemd-resolved" and this stop installation on Debian 12
3. Debian use BIND and he need to be stopped, and not systemd-resolved : systemctl stop bind9 && systemctl disable bind9
4. Iptables for PostUP/PostDown, variable -o for network interface is empty, should be probably -o enp1s0, and because of this service wg don't start

Just few extra if's in your script and it will be perfect :)

Cheers

[drew2a]

@ZEROF, thank you! I'll take a look at it soon :)

[drew2a]

I attempted to set up Wireguard on Debian 12 utilizing a Digital Ocean droplet and can confirm that it is not functioning as expected. Here's the status of the Wireguard service:

root@debian-s-1vcpu-1gb-35gb-intel-ams3-01:~# systemctl | grep wg
● wg-quick@wg0.service                                               loaded failed failed    WireGuard via wg-quick(8) for wg0
  system-wg\x2dquick.slice                                           loaded active active    Slice /system/wg-quick

While I haven't found a solution yet, I did verify that iptables is already installed:

root@debian-s-1vcpu-1gb-35gb-intel-ams3-01:~# sudo apt -y install iptables
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
iptables is already the newest version (1.8.9-2).
0 upgraded, 0 newly installed, 0 to remove and 45 not upgraded.

Furthermore, there isn't a bind9 service running on the system:

root@debian-s-1vcpu-1gb-35gb-intel-ams3-01:~# systemctl stop bind9 && systemctl disable bind9
Failed to stop bind9.service: Unit bind9.service not loaded.

@ZEROF, if you have some free time and can address the issue, please either open a PR with the fix or share the corrected script, and I'll handle the rest. Thank you.