public keys. @url{https://en.wikipedia.org/wiki/Onion_routing, Onion
encryption} is applied to relayed packets. Each node acts both as a
client and server, can use push and poll behaviour model.
+Also there is @ref{Multicast, multicasting} areas support.
Out-of-box offline @url{https://en.wikipedia.org/wiki/Sneakernet,
sneakernet/floppynet}, @url{https://en.wikipedia.org/wiki/Dead_drop,