diff --git a/hosts/jabber/default.nix b/hosts/jabber/default.nix
index 9af36825..51ceb21c 100644
--- a/hosts/jabber/default.nix
+++ b/hosts/jabber/default.nix
@@ -68,8 +68,8 @@ in
       enable = true;
       realm = "turn.${domain}";
       lt-cred-mech = true;
-      extraConfig = with zentralwerk.lib.config.site; ''
-        external-ip=${hosts.upstream4.interfaces.up4-pppoe.upstream.staticIpv4Address}/${net.serv.hosts4.jabber}
+      extraConfig = ''
+        external-ip=${zentralwerk.lib.dns.publicIPv4}/${zentralwerk.lib.config.site.net.serv.hosts4.jabber}
 
         user=${coturnUser}:${coturnPassword}
       '';