diff --git a/.obsidian/workspace b/.obsidian/workspace
index a6b2ed7..bf2164b 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -9,7 +9,7 @@
         "state": {
           "type": "markdown",
           "state": {
-            "file": "School/Analyse/IPv6.md",
+            "file": "School/Analyse/ip.md",
             "mode": "source"
           }
         }
@@ -68,7 +68,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "School/Analyse/IPv6.md",
+                "file": "School/Analyse/ip.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -87,7 +87,7 @@
   },
   "active": "bc6e8ad9aa0f44c3",
   "lastOpenFiles": [
-    "School/Analyse/IPv6.md",
+    "School/Analyse/ip.md",
     "School/Analyse/NAT.md",
     "School/Analyse/ICMP.md",
     "School/Analyse/DHCP.md",
diff --git a/IPV6-format.png b/IPV6-format.png
new file mode 100644
index 0000000..bc17841
Binary files /dev/null and b/IPV6-format.png differ
diff --git a/School/Analyse/IPv6.md b/School/Analyse/IPv6.md
deleted file mode 100644
index 9a11f33..0000000
--- a/School/Analyse/IPv6.md
+++ /dev/null
@@ -1,4 +0,0 @@
-# IPv6
-IPv4 has several problems:
--  Scarce IPv4 address.
-- IPv4 header contains fields 
\ No newline at end of file
diff --git a/School/Analyse/ip.md b/School/Analyse/ip.md
new file mode 100644
index 0000000..862e70f
--- /dev/null
+++ b/School/Analyse/ip.md
@@ -0,0 +1,10 @@
+# IPv6
+**IPv4 has several problems:**
+- Scarce IPv4 address.
+- IPv4 header contains fields that are not used by every packet (should be optional)
+- IPv4 imposes extra processes on routers, the network can become slower (such as fragmentation and checksum calculations)
+- IPv4 does not provide any security measurement at network layer.
+
+**IPv6 Format:**
+![[IPV6-format.png]]
+