From 4a405d899508c0161b4e34c1f94aeb59f0d319a4 Mon Sep 17 00:00:00 2001
From: edef <edef@edef.eu>
Date: Sun, 7 Jul 2019 00:46:28 +0000
Subject: [PATCH] nixos/networking: filter out empty entries

---
 nixos/modules/config/networking.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/config/networking.nix b/nixos/modules/config/networking.nix
index 8b352dad4727..eab4e73e19a1 100644
--- a/nixos/modules/config/networking.nix
+++ b/nixos/modules/config/networking.nix
@@ -233,7 +233,7 @@ in
           oneToString = set: ip: ip + " " + concatStringsSep " " set.${ip};
           allToString = set: concatMapStringsSep "\n" (oneToString set) (attrNames set);
         in ''
-          ${allToString cfg.hosts}
+          ${allToString (filterAttrs (_: v: v != []) cfg.hosts)}
           ${cfg.extraHosts}
         '';