Found 2 records.

Status: Verified (2)

RFC 4330, "Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI", January 2006

Note: This RFC has been obsoleted by RFC 5905

Errata ID: 2263
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Scott Barnes
Date Reported: 2010-05-15
Verifier Name: Nevil Brownlee
Date Verified: 2013-05-23

Section 5 says:

4.  The server reply should be discarded if any of the LI, Stratum,
    or Transmit Timestamp fields is 0 or the Mode field is not 4
    (unicast) or 5 (broadcast).

It should say:

4.  The server reply should be discarded if any of the VN, Stratum, 
    or Transmit Timestamp fields is 0 or the Mode field is not 4 
    (unicast) or 5 (broadcast).

Notes:

Zero is a legal value for the LI field under normal conditions. Zero is not legal for VN field, however.

Errata ID: 2480
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Dave Higton
Date Reported: 2010-08-20
Verifier Name: Nevil Brownlee
Date Verified: 2013-03-20

Section 4 says:

      MSF        Rugby (UK) Radio 60 kHz

It should say:

      MSF        Anthorn (UK) Radio 60 kHz

Notes:

The MSF transmitter was relocated from Rugby to Anthorn, in Cumbria, on 2007 March 31. See http://www.npl.co.uk/science-+-technology/time-and-frequency/npl-ensures-accurate-uk-time-for-the-next-15-years

http://www.npl.co.uk/educate-explore/what-is-time/what-is-msf confirms this.

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