In debug logging mode, use Google to determine our own IP address (IPv4 and IPv6).

Helpful for diagnosing troublesome setups.

SABnzbd.py

@@ -1276,6 +1276,25 @@ def main():
     logging.info('Python-version = %s', sys.version)
     logging.info('Arguments = %s', sabnzbd.CMDLINE)
 
+    if sabnzbd.cfg.log_level() > 1:
+        try:
+            s_ipv4 = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+            s_ipv4.connect(('google.com', 80))
+            logging.debug('My IPv4 address = %s', s_ipv4.getsockname()[0])
+            s_ipv4.close()
+        except:
+            logging.debug('Could not determine my IPv4 address')
+            pass
+        
+        try:
+            s_ipv6 = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
+            s_ipv6.connect(('ipv6.google.com', 80))
+            logging.debug('My IPv6 address = %s', s_ipv6.getsockname()[0])
+            s_ipv6.close()
+        except:
+            logging.debug('Could not determine my IPv6 address')
+            pass
+
     # OSX 10.5 I/O priority setting
     if sabnzbd.DARWIN:
         logging.info('[osx] IO priority setting')