From 03c2b449f8bdd9cf67dfa1a49353054df7cabf97 Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Wed, 27 Jul 2016 01:16:38 +0200
Subject: dhcpd service: Add extraFlags option

---
 nixos/modules/services/networking/dhcpd.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'nixos/modules/services/networking/dhcpd.nix')

diff --git a/nixos/modules/services/networking/dhcpd.nix b/nixos/modules/services/networking/dhcpd.nix
index 900df67b53a..36b4c5d5c1e 100644
--- a/nixos/modules/services/networking/dhcpd.nix
+++ b/nixos/modules/services/networking/dhcpd.nix
@@ -66,6 +66,14 @@ in
         ";
       };
 
+      extraFlags = mkOption {
+        default = "";
+        example = "-6";
+        description = "
+          Additional command line flags to be passed to the dhcpd daemon.
+        ";
+      };
+
       configFile = mkOption {
         default = null;
         description = "
@@ -138,6 +146,7 @@ in
           { ExecStart = "@${pkgs.dhcp}/sbin/dhcpd dhcpd"
               + " -pf /run/dhcpd/dhcpd.pid -cf ${configFile}"
               + " -lf ${stateDir}/dhcpd.leases -user dhcpd -group nogroup"
+              + " ${cfg.extraFlags}"
               + " ${toString cfg.interfaces}";
             Restart = "always";
             Type = "forking";
-- 
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