+FEATURES
+
+* GNU/Linux and FreeBSD support
+* IPv6 compatible
+* Encrypted and authenticated transport
+* Relatively fast handshake
+* Replay attack protection
+* Perfect forward secrecy (if long-term pre-shared keys are compromised,
+ no captured traffic can be decrypted anyway)
+* Mutual two-side authentication (noone will send real network interface
+ data unless the other side is authenticated)
+* Zero knowledge authentication (pre-shared key is not transmitted in
+ any form between the peers, not even it's hash value)
+* Built-in rehandshake and heartbeat features
+