* TODO:
* - test and document (!) ICMP based NAT traversal
* - test manual hole punching support
+ * - consider passing transport plugin name instead of
+ * external IP address string (more flexible!)
+ * - adapt existing transports to use new NAT logic
+ * - abandon legacy NAT code
+ *
* - implement "more" autoconfig:
* + consider moving autoconfig-logic into separate service!
* + re-work gnunet-nat-server & integrate!
* + test manually punched NAT (how?)
+ *
* - implement & test STUN processing to classify NAT;
* basically, open port & try different methods.
*/