From 985d7ea69699a47d120a390cb720fb01aee948ce Mon Sep 17 00:00:00 2001
From: magic_rb <richard@brezak.sk>
Date: Sat, 7 Oct 2023 22:44:42 +0200
Subject: [PATCH] Switch the dhcp server on blowhole to kea

Signed-off-by: magic_rb <richard@brezak.sk>
---
 nixos/systems/blowhole/firewall.nix | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/nixos/systems/blowhole/firewall.nix b/nixos/systems/blowhole/firewall.nix
index 4f2b1ea..d4c72e1 100644
--- a/nixos/systems/blowhole/firewall.nix
+++ b/nixos/systems/blowhole/firewall.nix
@@ -60,15 +60,20 @@ in
     before = [ "network-online.target" ];
   };
 
-  services.dhcpd4 = {
+  services.kea.dhcp4 = {
     enable = true;
-    interfaces = [ "${lan}" ]; # "${wlan}"
-    extraConfig = ''
-      option domain-name-servers ${secret.network.ips.blowhole.ip or ""};
-      option subnet-mask 255.255.255.0;
-
-      ${secret.dhcp.blowhole.zones or (const "") { inherit wlan lan; }}
-    '';
+    settings = {
+      interfaces-config.interfaces = [
+        "${lan}"
+      ];
+      lease-database = {
+        name = "/var/lib/kea/dhcp4.leases";
+        persist = true;
+        type = "memfile";
+      };
+      rebind-timer = 2000;
+      renew-timer = 1000;
+    } // (secret.dhcp.blowhole.zones or (const {}) { inherit wlan lan; });
   };
 
   networking = {