Version 6 : added padding to requests to prevent amplification attack,
changed maximum number of samples in manual list to 16, new commands: modify
- makestep, smoothing report, smoothtime command
+ makestep, smoothing, smoothtime
- Authentication was removed later in version 6.
+ Support for authentication was removed later in version 6 of the protocol
+ and commands that required authentication are allowed only locally over Unix
+ domain socket.
+
+ Version 6 (no authentication) : changed format of client accesses by index
+ (using new request/reply types), new flags in NTP source request and report,
+ new commands: refresh, serverstats
*/
#define PROTO_VERSION_NUMBER 6