diff --git a/flake.nix b/flake.nix
index ff38d322..938f6e1a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -87,7 +87,7 @@
 
           freifunk-nixos-rebuild = mkDeploy {
             name = "freifunk";
-            host = "freifunk.core.zentralwerk.org";
+            host = "freifunk.core.zentralwerk.dn42";
           };
 
           matemat-nixos-rebuild = mkDeploy {
diff --git a/hosts/containers/freifunk/default.nix b/hosts/containers/freifunk/default.nix
index b7aae1a4..cf7ebde8 100644
--- a/hosts/containers/freifunk/default.nix
+++ b/hosts/containers/freifunk/default.nix
@@ -2,7 +2,7 @@
 
 let
   coreAddress = hostRegistry.hosts.freifunk.ip4;
-  corePrefixlen = 26;
+  corePrefixlen = 25;
   meshInterface = "bmx";
   meshLoopback = "bmx_prime";
   ddmeshRegisterUrl = "https://register.freifunk-dresden.de/bot.php";
diff --git a/hosts/containers/yggdrasil/default.nix b/hosts/containers/yggdrasil/default.nix
index 54b558e9..570e76e5 100644
--- a/hosts/containers/yggdrasil/default.nix
+++ b/hosts/containers/yggdrasil/default.nix
@@ -40,7 +40,7 @@ in {
       ipv4 = {
         addresses = [{
           address = host.ip4;
-          prefixLength = 26;
+          prefixLength = 25;
         }];
       };
       ipv6 = {