feat: add diagnostic scripts for gateway and DNS investigation

scripts/check_gateway.py

@@ -0,0 +1,20 @@
+import paramiko
+import sys
+
+sys.stdout.reconfigure(encoding='utf-8')
+
+key_path = r"C:\Users\Snarf\.ssh\id_ed25519_snarfnet"
+c = paramiko.SSHClient()
+c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+c.connect("140.44.4.11", username="root", key_filename=key_path, timeout=10)
+
+stdin, stdout, stderr = c.exec_command("curl -k -s -I http://140.44.4.1/ || curl -k -s -I https://140.44.4.1/")
+print("Gateway 140.44.4.1 HTTP headers:")
+print(stdout.read().decode('utf-8'))
+
+stdin, stdout, stderr = c.exec_command("arp -an | grep 140.44.4.1")
+print("ARP for 140.44.4.1:")
+print(stdout.read().decode('utf-8'))
+
+c.close()
+