enable DHCP on gns3 use

vnc.sh

@@ -1,7 +1,20 @@
 #!/bin/bash
 
+# Bring up all interfaces and request DHCP, except loopback
+if [ -d /gns3 ]; then
+    echo "Running in GNS3 environment, setting up interfaces for DHCP..."
+    for iface in $(ip -o link show | awk -F': ' '{print $2}' | grep -v '^lo$'); do
+        echo "Bringing up interface: $iface"
+        ip link set "$iface" up
+        udhcpc -i "$iface" &
+    done
+fi
+
+# Wait a moment for DHCP leases
+sleep 2
+
 # Launch i3 window manager
 /usr/bin/i3
 
 echo "i3 exited unexpectedly"
-sleep infinity
+sleep infinity