diff --git a/config/net/cluster.nix b/config/net/cluster.nix
index a2b49d8..a637b9b 100644
--- a/config/net/cluster.nix
+++ b/config/net/cluster.nix
@@ -7,8 +7,15 @@ in
     ipv6Router = "cls-gw";
     domainName = "cluster.zentralwerk.org";
     extraRecords = map (host: {
-      data = "1 1 6789 ${host}";
-      name = "_ceph-mon._tcp";
+      data = {
+        service = "ceph-mon";
+        proto = "tcp";
+        priority = 1;
+        weight = 1;
+        port = 6789;
+        target = host;
+      };
+      name = "@";
       type = "SRV";
     }) cephMonServers
     ++
diff --git a/nix/lib/config/options.nix b/nix/lib/config/options.nix
index de776c2..63131d7 100644
--- a/nix/lib/config/options.nix
+++ b/nix/lib/config/options.nix
@@ -178,7 +178,7 @@ let
               type = enum [ "A" "AAAA" "MX" "SRV" "CNAME" "TXT" ];
             };
             data = mkOption {
-              type = str;
+              type = oneOf [ str (attrsOf (oneOf [ int str ])) ];
             };
           };
         });
diff --git a/nix/nixos-module/container/dns.nix b/nix/nixos-module/container/dns.nix
index 329392e..262d0db 100644
--- a/nix/nixos-module/container/dns.nix
+++ b/nix/nixos-module/container/dns.nix
@@ -35,7 +35,7 @@ in
           type = types.enum [ "A" "AAAA" "MX" "SRV" "CNAME" "TXT" "PTR" ];
         };
         data = mkOption {
-          type = types.str;
+          type = types.oneOf [ types.str (types.attrsOf (types.oneOf [ types.int types.str ]))];
         };
       };