From 01ce4f7eb340319f10b60ff288ba4333a85bb54d Mon Sep 17 00:00:00 2001
From: florian <florian@management.ad.flotastisch.net>
Date: Wed, 13 Jan 2021 17:22:10 +0100
Subject: [PATCH] initial version

---
 ipv6_reversedns.py | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100755 ipv6_reversedns.py

diff --git a/ipv6_reversedns.py b/ipv6_reversedns.py
new file mode 100755
index 0000000..f9976fd
--- /dev/null
+++ b/ipv6_reversedns.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+import socket
+
+def my_ipv6():
+    # for udp no packet is sent
+    s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
+    try:
+        # 2001:db8::/32  is used for documentation and example source code
+        s.connect(('2001:db8::', 1027))
+    except socket.error:
+        return None
+    return s.getsockname()[0]
+
+
+def main():
+    returncode = 0
+    state = 'OK'
+    my_ip = my_ipv6()
+    result = ''
+    try:
+        reversedns = socket.gethostbyaddr(my_ip)
+        result = f'{my_ip} resolves to {reversedns[0]}'
+    except Exception as error:
+        returncode = 2
+        state = 'CRITICAL'
+        result = error
+
+
+    print(f'{returncode} reversedns_ipv6 - {state} {result}')
+
+
+if __name__ == '__main__':
+    main()
+
+