diff --git a/uml/network.pu b/uml/network.pu
index cad7b67..5c63ccd 100644
--- a/uml/network.pu
+++ b/uml/network.pu
@@ -1,21 +1,36 @@
 @startuml
 nwdiag {
-  inet [shape = cloud];
-  inet -- router;
+  internet [shape = cloud];
+  router [address = "surveyor.mydns.jp", shape = node];
+  internet -- router;
 
-  network Proxy {
-    router [shape = node];
-    raspi2 [address = "surveyor.mydns.jp", shape=node];
+  group {
+    color = "#FFAAAA";
+    raspi2;
+    macmini;
+    ark-c;
   }
 
   network DMZ {
-    raspi2 [address = "192.168.0.200", shape=node];
-    raspi3 [address = ".201", shape=node];
+    address = "192.168.0.0/24";
+    router [address = ".1", shape = node];
+    raspi2 [address = ".200", shape=node];
+  }
+  network proxy {
+    raspi2;
     macmini [address = ".202", shape=node];
+    raspi3 [address = ".201", shape=node];
     t3400 [address = ".203", shape=node];
-    ark-a [shape=node];
-    ark-b [shape=node];
-    ark-c [shape=node];
+    ark-a [address = ".204", shape=node];
+    ark-b [address = ".205", shape=node];
+    ark-c [address = ".206", shape=node];
+  }
+  network DHCP {
+    address = "192.168.0.0/24";
+    router [shape = node];
+    versapro [shape=node];
+    gigabyte [shape=node];
+    printer [shape=node];
   }
 }
 @enduml