RFC 8401, "Bit Index Explicit Replication (BIER) Support via IS-IS", June 2018Source of RFC: bier (rtg)
Errata ID: 6418
Status: Held for Document Update
Publication Format(s) : TEXT
Reported By: Les Ginsberg
Date Reported: 2021-01-31
Held for Document Update by: Alvaro Retana
Date Held: 2021-02-02
Section 4.2 says:
o When the Prefix Attributes Flags sub-TLV [RFC7794] is present, the N flag MUST be set and the R flag MUST NOT be set.
It should say:
o When the Prefix Attributes Flags sub-TLV [RFC7794] is present, the N flag MUST be set.
Early versions of the draft did not support leaking of BIER advertisements. At that time the requirement that R-flag be clear made sense. Once leaking was allowed the prohibition against R-bit being set no longer makes sense and should be removed.