hosts/losurdo/networking.nix

   1 { pkgs, lib, config, hostName, ... }:
   2 with builtins;
   3 let
   4   inherit (config) networking;
   5   lanIPv4        = "192.168.1.215";
   6   lanNet         = "192.168.1.0/24";
   7   lanIPv4Gateway = "192.168.1.1";
   8 in
   9 {
  10 imports = [
  11   networking/nftables.nix
  12   networking/ssh.nix
  13   networking/wireguard/intranet.nix
  14   networking/wireguard/extranet.nix
  15   #networking/tor.nix
  16   networking/nsupdate.nix
  17   networking/wireless.nix
  18   networking/openvpn.nix
  19 ];
  20
  21 boot.initrd.network = {
  22   enable = true;
  23   flushBeforeStage2 = true;
  24   # This will automatically load the zfs password prompt on login
  25   # and kill the other prompt so boot can continue
  26   # The pkill zfs kills the zfs load-key from the console
  27   # allowing the boot to continue.
  28   postCommands = ''
  29     echo >>/root/.profile "zfs load-key ${hostName} && pkill zfs"
  30   '';
  31   # Retry DHCP forever (because in case of power failure,
  32   # the router may take longer to boot).
  33   # Beware that this is not interruptible with Ctrl-C
  34   udhcpc.extraArgs = [ "--retries=0" ];
  35 };
  36
  37 /* WARNING: using ipconfig (the ip= kernel parameter) IS NOT RELIABLE:
  38    a 91.216.110.35/32 becomes a 91.216.110.35/8
  39 boot.kernelParams = map
  40   (ip: "ip=${ip.clientIP}:${ip.serverIP}:${ip.gatewayIP}:${ip.netmask}:${ip.hostname}:${ip.device}:${ip.autoconf}")
  41   [ { clientIP = netIPv4; serverIP = "";
  42       gatewayIP = networking.defaultGateway.address;
  43       netmask = "255.255.255.255";
  44       hostname = ""; device = networking.defaultGateway.interface;
  45       autoconf = "off";
  46     }
  47     { clientIP = lanIPv4; serverIP = "";
  48       gatewayIP = "";
  49       netmask = "255.255.255.0";
  50       hostname = ""; device = "enp2s0";
  51       autoconf = "off";
  52     }
  53   ];
  54 */
  55 /* DIY network config, but a right one */
  56 /*
  57 boot.initrd.preLVMCommands = ''
  58   set -x
  59
  60   # IPv4 lan
  61   ip link set enp5s0 up
  62   ip address add ${lanIPv4}/32 dev enp5s0
  63   ip route add ${lanIPv4Gateway} dev enp5s0
  64   ip route add ${lanNet} dev enp5s0 src ${lanIPv4} proto kernel
  65     # NOTE: ${lanIPv4}/24 would not work with initrd's ip, hence ${lanNet}
  66   ip route add default via ${lanIPv4Gateway} dev enp5s0
  67
  68   # IPv6 net
  69   #ip -6 address add ''${lanIPv6} dev enp5s0
  70   #ip -6 route add ''${lanIPv6Gateway} dev enp5s0
  71   #ip -6 route add default via ''${lanIPv6Gateway} dev enp5s0
  72
  73   ip -4 address
  74   ip -4 route
  75   #ip -6 address
  76   #ip -6 route
  77
  78   set +x
  79 '';
  80 */
  81 # Workaround https://github.com/NixOS/nixpkgs/issues/56822
  82 #boot.initrd.kernelModules = [ "ipv6" ];
  83
  84 # Useless without an out-of-band access, and unsecure
  85 # (though / may still be encrypted at this point).
  86 # boot.kernelParams = [ "boot.shell_on_fail" ];
  87
  88 /*
  89 # Disable IPv6 entirely until it's available
  90 boot.kernel.sysctl = {
  91   "net.ipv6.conf.enp5s0.disable_ipv6" = 1;
  92 };
  93 */
  94
  95 networking = {
  96   hostName = hostName;
  97   domain = "sourcephile.fr";
  98
  99   useDHCP = false;
 100   enableIPv6 = true;
 101   /*
 102   defaultGateway = {
 103     address = lanIPv4Gateway;
 104     interface = "enp5s0";
 105   };
 106   defaultGateway6 = {
 107     address = lanIPv6Gateway;
 108     interface = "enp5s0";
 109   };
 110   */
 111   #nameservers = [ ];
 112 };
 113
 114 networking.nftables.ruleset = ''
 115   add rule inet filter input  iifname "enp5s0" goto net2fw
 116   add rule inet filter output oifname "enp5s0" jump fw2net
 117   add rule inet filter output oifname "enp5s0" log level warn prefix "fw2net: " counter drop
 118   add rule inet filter fw2net ip daddr ${lanNet} log level info prefix "fw2net: lan: " counter accept comment "LAN"
 119   add rule inet nat postrouting oifname "enp5s0" masquerade
 120 '';
 121 boot.kernel.sysctl."net.ipv6.conf.enp5s0.addr_gen_mode" = 1;
 122 /*
 123 security.gnupg.secrets."ipv6/enp5s0/stable_secret" = {};
 124 # This is only active in stage2, the initrd will still use the MAC-based SLAAC IPv6.
 125 system.activationScripts.ipv6 = ''
 126   ${pkgs.procps}/bin/sysctl --quiet net.ipv6.conf.enp5s0.stable_secret="$(cat ${gnupg.secrets."ipv6/enp5s0/stable_secret".path})"
 127 '';
 128 */
 129 networking.interfaces.enp5s0 = {
 130   useDHCP = true;
 131   /*
 132   ipv4.addresses = [ { address = lanIPv4; prefixLength = 24; } ];
 133
 134   ipv4.routes    = [ { address = networking.defaultGateway.address; prefixLength = 32; } ];
 135   ipv6.addresses = [ { address = lanIPv6; prefixLength = 64; }
 136                      { address = "fe80::1"; prefixLength = 10; }
 137                    ];
 138   ipv6.routes    = [ { address = networking.defaultGateway6.address; prefixLength = 64; } ];
 139   */
 140 };
 141 }