config/networking/bridges.nix


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{ config, lib, utils, pkgs, ... }:

let nets = config.personal.networking.networks;
in {
  config = lib.mkMerge ([{
    systemd.services.hostapd.postStart = lib.mkForce (lib.mkBefore ''
      sleep 3
    '');
  }] ++ (builtins.map (network:
    let
      bridge = network.interface;
      device = network.device;
    in {
      networking.bridges."${bridge}".interfaces = [ ];

      systemd.services."${bridge}-netdev".script = ''
        echo Setting forward delay to 0 for ${bridge}...
        ip link set ${bridge} type bridge forward_delay 0
      '';

      systemd.services.hostapd.postStart = lib.mkForce (''
        echo Setting ${device} to hairpin mode...
        ${pkgs.iproute2}/bin/bridge link set dev ${device} hairpin on
      '');
    }) [ nets.wan nets.iot ]));
}