{ pkgs, lib, config, hosts, hostName, credentials, ... }:
let
  wgIface = "wg-extra";
  listenPort = 16843;
in
{
networking.nftables.ruleset = ''
  table inet filter {
    chain input-net {
      udp dport ${toString listenPort} counter accept comment "${wgIface}"
    }
    chain input-extra {
      counter accept
    }
    chain input {
      iifname ${wgIface} jump input-extra
      iifname ${wgIface} log level warn prefix "input-extra: " counter drop
    }
    chain output-net {
    }
    chain output-extra {
      counter accept
    }
    chain output {
      oifname ${wgIface} jump output-extra
      oifname ${wgIface} log level warn prefix "output-extra: " counter drop
    }
    chain forward {
      # forward
      iifname ${wgIface} counter accept
    }
  }
'';
#boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
systemd.services."wireguard-${wgIface}".serviceConfig.LoadCredentialEncrypted = "privateKey:${credentials}/wireguard/${wgIface}/privateKey.secret";
networking.wireguard.interfaces."${wgIface}" = {
  # publicKey: 1Iyq96rPHfyrt4B31NqKLgWzlglkMAWjA41aF279gjM=
  privateKeyFile = "$CREDENTIALS_DIRECTORY/privateKey";
  ips = [ "192.168.43.1/32" ];
  inherit listenPort;
  socketNamespace = null;
  /*
  interfaceNamespace = "extra";
  preSetup = ''
    ${pkgs.iproute}/bin/ip netns add extra
  '';
  */
  peers = [
    { # julm-laptop
      publicKey = "Ul1+GINJ/eXy7MhUQLB6wXboLUfKW32nwHd/IAGtwSk=";
      allowedIPs = [ "192.168.43.2/32" ];
    }
    { # julm-mobile
      publicKey = "7hdI8aInfxFG0Ua1jHMDmx1RezI1q1PObFx6Kp2g5iI=";
      allowedIPs = [ "192.168.43.3/32" ];
    }
  ];
};
}