diff --git a/IPv6-addressingscheme.md b/IPv6-addressingscheme.md
index 5b14ab2..4531b4e 100644
--- a/IPv6-addressingscheme.md
+++ b/IPv6-addressingscheme.md
@@ -79,3 +79,38 @@ Static addresses and routing
 
 * Web Server: `2001:db8:4000:60::10/64`
 
+### Router Loopback Interface
+
+* RT-HH-01: `2001:db8:1000:ffff::1/128`
+
+* RT-HL-01: `2001:db8:2000:ffff::1/128`
+
+* RT-B-01: `2001:db8:3000:ffff::1/128`
+
+* RT-M-01: `2001:db8:4000:ffff::1/128`
+
+### Router-to-Switch Connections
+
+**Hamburg: `2001:db8:1000:fff0::/64`**
+
+* RT-HH-01: `2001:db8:1000:fff0::1/64`
+
+* SW-HH-01: `2001:db8:1000:fff0::2/64`
+
+**Lübeck: `2001:db8:2000:fff0::/64`**
+
+* RT-HL-01: `2001:db8:2000:fff0::1/64`
+
+* SW-HL-01: `2001:db8:2000:fff0::2/64`
+
+**Berlin: `2001:db8:3000:fff0::/64`**
+
+* RT-B-01: `2001:db8:3000:fff0::1/64`
+
+* SW-B-01: `2001:db8:3000:fff0::2/64`
+
+**München: `2001:db8:4000:fff0::/64`**
+
+* RT-M-01: `2001:db8:4000:fff0::1/64`
+
+* SW-M-01: `2001:db8:4000:fff0::2/64`
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