RFC 4271, "A Border Gateway Protocol 4 (BGP-4)", January 2006

Note: This RFC has been updated by RFC 6286, RFC 6608, RFC 6793, RFC 7606, RFC 7607, RFC 7705, RFC 8212, RFC 8654, RFC 9072

Errata ID: 1633
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: John Scudder
Date Reported: 2008-12-12
Verifier Name: Stewart Bryant
Date Verified: 2011-08-02

Section 6.3 says:

   If an optional attribute is recognized, then the value of this
   attribute MUST be checked.  If an error is detected, the attribute
   MUST be discarded, and the Error Subcode MUST be set to Optional
   Attribute Error.  The Data field MUST contain the attribute (type,
   length, and value).

It should say:

   If an optional attribute is recognized, then the value of this
   attribute MUST be checked.  If an error is detected, the Error 
   Subcode MUST be set to Optional Attribute Error.  The Data 
   field MUST contain the attribute (type, length, and value).

Notes:

This simply removes the clause "the attribute MUST be discarded", which doesn't make sense since the peering is to be terminated anyway.

Report New Errata