diff --git a/files/interfaces-troisdorf5 b/files/interfaces-troisdorf5
index 34438d7..3afaedd 100644
--- a/files/interfaces-troisdorf5
+++ b/files/interfaces-troisdorf5
@@ -21,12 +21,9 @@ iface eth0 inet dhcp
         post-up iptables -A OUTPUT -o eth0 -d 169.254.0.0/16 -j DROP
         post-up iptables -A OUTPUT -o eth0 -d 192.168.0.0/16 -j DROP
         post-up iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
-allow-hotplug eth1
-iface eth1 inet6 static
-        address 2a01:4f8:172:f4b::5
-        netmask 64
-        gateway 2a01:4f8:172:f4b::2
-		dns-nameserver 2a01:4f8:0:a0a1::add:1010 2a01:4f8:0:a102::add:9999 2a01:4f8:0:a111::add:9898
+auto 6to4
+	iface 6to4 inet6 6to4
+        local 138.201.54.123
 
 # GRE Tunnel zum Rheinland Backbone
 # - Die Konfigurationsdaten werden vom Rheinland Backbone vergeben und zugewiesen