diff --git a/etc/network/interfaces.d/gre_fff-sw b/etc/network/interfaces.d/gre_fff-sw
index 41d8de6..4f325e4 100644
--- a/etc/network/interfaces.d/gre_fff-sw
+++ b/etc/network/interfaces.d/gre_fff-sw
@@ -1,3 +1,16 @@
+
+#GRE-Tunnel zu fff-sw
+#
+#Robert Langhammer (rola)
+#Max Wohlfart (Moexe)
+#
+#fff-sw
+#       öffentlich:	46.4.85.158
+#       freifunk:	10.50.252.8
+#fff-ab-01
+#       öffentlich:	5.189.177.88
+#       freifunk:	10.50.252.161
+
 auto fff-sw
 iface fff-sw inet static
 	address 10.50.252.161