diff --git a/hosts/hydra/nomad-server.nix b/hosts/hydra/nomad-server.nix
index e5a7affa..6553e4e0 100644
--- a/hosts/hydra/nomad-server.nix
+++ b/hosts/hydra/nomad-server.nix
@@ -3,7 +3,7 @@
 { zentralwerk, config, pkgs, ... }:
 let
   inherit (config.networking) hostName;
-  ipv6Addr = zentralwerk.lib.config.site.net.serv.hosts6.dn42.${hostName};
+  ipv4Addr = zentralwerk.lib.config.site.net.serv.hosts4.${hostName};
 in
 {
   services.nomad = {
@@ -13,12 +13,6 @@ in
     settings = {
       datacenter = "c3d2";
       plugin.raw_exec.config.enabled = true;
-
-      addresses = {
-        http = "::1";
-        rpc = ipv6Addr;
-        serf = ipv6Addr;
-      };
       server = {
         enabled = true;
         bootstrap_expect = 3;
diff --git a/modules/cluster/default.nix b/modules/cluster/default.nix
index c076f6e4..d18040fa 100644
--- a/modules/cluster/default.nix
+++ b/modules/cluster/default.nix
@@ -14,7 +14,7 @@ let
       else result
     ) null [ "cluster" "serv" ];
 
-  ipv6Addr = zentralwerk.lib.config.site.net.${serverNet hostName}.hosts6.dn42.${hostName};
+  ipv4Addr = zentralwerk.lib.config.site.net.${serverNet hostName}.hosts4.${hostName};
 in {
   imports = [
   ];
@@ -59,19 +59,13 @@ in {
       datacenter = "c3d2";
       plugin.raw_exec.config.enabled = true;
 
-      addresses = {
-        http = "::1";
-        rpc = ipv6Addr;
-        serf = ipv6Addr;
-      };
-
       server = {
         enabled = true;
         bootstrap_expect = 3;
       };
       server_join = {
         retry_join = map (server:
-          zentralwerk.lib.config.site.net.${serverNet server}.hosts6.dn42.${server}
+          zentralwerk.lib.config.site.net.${serverNet server}.hosts4.${server}
         ) (
           builtins.filter (server: server != hostName)
             servers
@@ -81,7 +75,6 @@ in {
       client = {
         enabled = true;
         network_interface = "cluster";
-        servers = [ "localhost" ];
       };
     };
   };