From abc8263e0225a8461dc3345cad054952e842a12f Mon Sep 17 00:00:00 2001
From: Jakob Lechner <mail@jalr.de>
Date: Sun, 20 Jul 2025 19:53:38 +0200
Subject: [PATCH] Force DHCP server to bind sockets

and add restart policy to systemd service
---
 nix/modules/dhcp.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/nix/modules/dhcp.nix b/nix/modules/dhcp.nix
index 30e689a..05d7227 100644
--- a/nix/modules/dhcp.nix
+++ b/nix/modules/dhcp.nix
@@ -44,11 +44,17 @@ in {
   };
 
   config = mkIf cfg.enable {
+    systemd.services.kea-dhcp4-server.serviceConfig = {
+      Restart = "on-failure";
+      RestartSec = 3;
+    };
+
     services.kea.dhcp4 = {
       enable = true;
       settings = {
         interfaces-config = {
           interfaces = [ cfg.interface ];
+          service-sockets-require-all = true;
         };
         option-def = [
           {