From 8bc0ce6e15dfba21ce0b593d52e381a8abc15440 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Thu, 6 May 2021 15:46:16 +0200
Subject: [PATCH] nixos-module/container/dns: allow underscores in dynamic
 hostnames

---
 nix/nixos-module/container/dns.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/nix/nixos-module/container/dns.nix b/nix/nixos-module/container/dns.nix
index b5ac1a5..cfc466f 100644
--- a/nix/nixos-module/container/dns.nix
+++ b/nix/nixos-module/container/dns.nix
@@ -324,6 +324,11 @@ in
             algorithm hmac-sha256;
             secret "${inputs.zentralwerk-network-key.lib.dyndnsKey}";
           };
+
+          # allow underscores in dynamic hostnames
+          ${lib.concatMapStringsSep "\n" (type: ''
+            check-names ${type} ignore;
+          '') [ "master" "slave" "response" ]}
         '';
       });