diff --git a/files/bird6-troisdorf4.conf b/files/bird6-troisdorf4.conf
index 08566f9..570e6fa 100644
--- a/files/bird6-troisdorf4.conf
+++ b/files/bird6-troisdorf4.conf
@@ -42,7 +42,7 @@ return net ~ [ fc00::/7{48,64},
 }
 
 filter hostroute {
-        if net ~ 2a03:2260:121::/48 then accept;
+        if net ~ 2a03:2260:121:4000::/52 then accept;
         reject;
 }
 
diff --git a/files/bird6-troisdorf6.conf b/files/bird6-troisdorf6.conf
index 944c19d..2ad3a69 100644
--- a/files/bird6-troisdorf6.conf
+++ b/files/bird6-troisdorf6.conf
@@ -44,7 +44,7 @@ return net ~ [ fc00::/7{48,64},
 }
 
 filter hostroute {
-        if net ~ 2a03:2260:121::/48 then accept;
+        if net ~  03:2260:121:6000::/52 then accept;
         reject;
 }
 
diff --git a/files/bird6-troisdorf7.conf b/files/bird6-troisdorf7.conf
index b2c0aa0..05f087f 100644
--- a/files/bird6-troisdorf7.conf
+++ b/files/bird6-troisdorf7.conf
@@ -42,7 +42,7 @@ return net ~ [ fc00::/7{48,64},
 }
 
 filter hostroute {
-        if net ~ 2a03:2260:121::/48 then accept;
+        if net ~ 2a03:2260:121:7000::/52 then accept;
         reject;
 }
 
diff --git a/files/interfaces-troisdorf4 b/files/interfaces-troisdorf4
index 995ae25..3784e32 100644
--- a/files/interfaces-troisdorf4
+++ b/files/interfaces-troisdorf4
@@ -9,7 +9,7 @@ iface lo inet loopback
         up ip address add 185.66.193.104/32 dev lo
 
 iface lo inet6 loopback
-        up ip address add 2a03:2260:121::104/48 dev lo
+	up ip address add 2a03:2260:121:4000::105/52 dev lo
 
 
 # The primary network interface
diff --git a/files/interfaces-troisdorf6 b/files/interfaces-troisdorf6
index 2cfdec5..ceb6352 100644
--- a/files/interfaces-troisdorf6
+++ b/files/interfaces-troisdorf6
@@ -9,7 +9,7 @@ iface lo inet loopback
         up ip address add 185.66.193.106/32 dev lo
 
 iface lo inet6 loopback
-        up ip address add 2a03:2260:121::106/48 dev lo
+	up ip address add 2a03:2260:121:6000::105/52 dev lo
 
 
 # The primary network interface
diff --git a/files/interfaces-troisdorf7 b/files/interfaces-troisdorf7
index f15278e..a17ba81 100644
--- a/files/interfaces-troisdorf7
+++ b/files/interfaces-troisdorf7
@@ -9,7 +9,7 @@ iface lo inet loopback
         up ip address add 185.66.193.107/32 dev lo
 
 iface lo inet6 loopback
-        up ip address add 2a03:2260:121::107/48 dev lo
+	up ip address add 2a03:2260:121:7000::105/52 dev lo
 
 
 # The primary network interface