These are important ID types used in SILC. SILC server creates these
 but SILC client has to handle these as well since these are used in
 packet sending and reception. However, client never creates these
 but it receives the correct ID's from server. Clients, servers and
 channels are identified by the these ID's.

 The ID's are based on IP addresses. The IP address provides a good
 way to distinguish the ID's from other ID's. The ID's supports both
 IPv4 and IPv6.

 This file also includes the implementation of the SILC ID Payload
 parsing and encoding.