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[Ntp] [Errata Verified] RFC5905 (5020)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 27 July 2022 15:06 UTC

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Subject: [Ntp] [Errata Verified] RFC5905 (5020)
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The following errata report has been verified for RFC5905,
"Network Time Protocol Version 4: Protocol and Algorithms Specification". 

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid5020

--------------------------------------
Status: Verified
Type: Technical

Reported by: Ferenc Wágner <wferi@niif.hu>
Date Reported: 2017-05-15
Verified by: Erik Kline (IESG)

Section: 8

Original Text
-------------
theta = T(B) - T(A) = 1/2 * [(T2-T1) + (T3-T4)]

Corrected Text
--------------
theta = T(B) - T(A) = 1/2 * [(T2-T1) + (T4-T3)]

Notes
-----
The corresponding code line in A.5.1.1. agrees with this correction:

offset = (LFP2D(r->rec - r->org) + LFP2D(r->dst - r->xmt)) / 2;

taking Figure 7 into account:

| org       | T1         | origin timestamp      |
| rec       | T2         | receive timestamp     |
| xmt       | T3         | transmit timestamp    |
| dst       | T4         | destination timestamp |

--------------------------------------
RFC5905 (draft-ietf-ntp-ntpv4-proto-13)
--------------------------------------
Title               : Network Time Protocol Version 4: Protocol and Algorithms Specification
Publication Date    : June 2010
Author(s)           : D. Mills, J. Martin, Ed., J. Burbank, W. Kasch
Category            : PROPOSED STANDARD
Source              : Network Time Protocols
Area                : Internet
Stream              : IETF
Verifying Party     : IESG

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