RFC 5424, "The Syslog Protocol", March 2009Source of RFC: syslog (sec)
Errata ID: 5010
Reported By: Job Snijders
Date Reported: 2017-05-05
Section 8.1 says:
This document guards against the technical issues outlined in UTR36 by REQUIRING "shortest form" encoding for syslog applications.
It should say:
"Shortest Form" encoding is REQUIRED for syslog applications to guard against the technical issues outlined in UTR36.
"REQUIRING" is not a RFC 2119 keyword.