From ebbdb619354b4cf23ddddb0410b311a38faf702e Mon Sep 17 00:00:00 2001
From: Aaron Ecay <aaronecay@gmail.com>
Date: Fri, 6 Dec 2024 20:47:15 +0000
Subject: [PATCH] fix dhcpcd when ipv6 is disabled

---
 nixos/modules/services/networking/dhcpcd.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/networking/dhcpcd.nix b/nixos/modules/services/networking/dhcpcd.nix
index 059dc59e8a0a..310a1f3d1c55 100644
--- a/nixos/modules/services/networking/dhcpcd.nix
+++ b/nixos/modules/services/networking/dhcpcd.nix
@@ -249,7 +249,8 @@ in
             ExecReload = "${dhcpcd}/sbin/dhcpcd --rebind";
             Restart = "always";
             AmbientCapabilities = [ "CAP_NET_ADMIN" "CAP_NET_RAW" "CAP_NET_BIND_SERVICE" ];
-            ReadWritePaths = [ "/proc/sys/net/ipv4" "/proc/sys/net/ipv6" ]
+            ReadWritePaths = [ "/proc/sys/net/ipv4" ]
+              ++ lib.optional cfgN.enableIPv6 "/proc/sys/net/ipv6"
               ++ lib.optionals useResolvConf ([ "/run/resolvconf" ] ++ config.networking.resolvconf.subscriberFiles);
             DeviceAllow = "";
             LockPersonality = true;