Add netplan.md

netplan.md

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+# **Netplan for Ubuntu VMs**
+## Change DHCP to Static IP
+### Edit /etc/netplan/50-cloud-init.yaml (change to match your netplan .yaml file)
+
+```
+network:
+  version: 2
+  ethernets:
+    enp6s18:                    # replace with your interface name
+      dhcp4: false
+      addresses:
+        - x.x.x.x/24            # your desired static IP
+      routes:
+        - to: default
+          via: x.x.x.x          # your gateway
+      nameservers:
+        addresses:
+          - 1.1.1.1             # DNS — your gateway or preferred resolver
+          - 8.8.8.8
+```
+
+---
+
+## Test and Apply changes
+
+**Test if config takes**
+
+```netplan try```
+
+**Apply config**
+
+```netplan apply```