Network Time Protocol Version 4 (NTPv4) Extension Fields, March 2016
- File formats:
- PROPOSED STANDARD
- RFC 5905
- T. Mizrahi
- ntp (int)
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The Network Time Protocol version 4 (NTPv4) defines the optional usage of extension fields. An extension field, as defined in RFC 5905, is an optional field that resides at the end of the NTP header and that can be used to add optional capabilities or additional information that is not conveyed in the standard NTP header. This document updates RFC 5905 by clarifying some points regarding NTP extension fields and their usage with Message Authentication Codes (MACs).
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.