diff --git a/tech_docs/lab/ipv6_lab.md b/tech_docs/lab/ipv6_lab.md
index 1f952ad..536b9bc 100644
--- a/tech_docs/lab/ipv6_lab.md
+++ b/tech_docs/lab/ipv6_lab.md
@@ -3,23 +3,23 @@ graph TD
   %% Host and Bridges
   subgraph Host_Machine_LXD
     H0[LXD Host]
-    H0 --> B1[br-lan - IPv4/IPv6 LAN]
-    H0 --> B2[br-wan - Simulated WAN]
+    H0 --> B1[br-lan: IPv4/IPv6 LAN]
+    H0 --> B2[br-wan: Simulated WAN]
   end
 
   %% LAN Zone
   subgraph LAN_Zone
-    B1 --> R1[Router - VyOS/Ubuntu (radvd, DHCPv6, NAT64)]
-    R1 --> C1[Client1 - IPv6-only]
-    R1 --> C2[Client2 - Dual-Stack]
-    R1 --> C3[Client3 - IPv4-only]
-    R1 --> S1[WebServer - Dual-Stack NGINX + DNS]
+    B1 --> R1[Router: VyOS or Ubuntu with radvd/DHCPv6/NAT64]
+    R1 --> C1[Client1: IPv6-only]
+    R1 --> C2[Client2: Dual-Stack]
+    R1 --> C3[Client3: IPv4-only]
+    R1 --> S1[WebServer: Dual-Stack NGINX + DNS]
   end
 
   %% WAN Zone
   subgraph WAN_Zone
     B2 --> ISP[ISP Router (simulated)]
-    ISP --> EXT[External IPv6 Service]
+    ISP --> EXT[External IPv6 Service or Tunnel Broker]
   end
 
   %% Logical Routing