diff --git a/docs/tech_docs/OpenWrt.md b/docs/tech_docs/OpenWrt.md
index 20156ee..be8e4c1 100644
--- a/docs/tech_docs/OpenWrt.md
+++ b/docs/tech_docs/OpenWrt.md
@@ -52,6 +52,11 @@ config interface 'lan'
         option device 'eth1'
         option ipaddr '10.0.0.1'
         option netmask '255.255.255.0'
+
+config interface 'lan6'
+        option proto 'static'
+        option device 'eth1'
+        option ip6addr 'fd00::1/64'
 ```
 
 ```bash