RFC 6514, "BGP Encodings and Procedures for Multicast in MPLS/BGP IP VPNs", February 2012

Errata ID: 5724
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Jingrong Xie
Date Reported: 2019-05-20
Held for Document Update by: Alvaro Retana
Date Held: 2022-06-22

Section 11.1.3 says:

The Source AS field in the C-multicast
route is set to value of the Originating Router's IP Address field of
the found Intra-AS I-PMSI A-D route.

It should say:

The Source AS field in the C-multicast
route is set to value of the Originating Router's IP Address field of
the found Intra-AS I-PMSI A-D route when the Originating Router's IP 
Address is an IPv4 address.

Notes:

Source AS field in C-multicast route is a 4-octet field, and only an IPv4 address is possible to be filled in it. The Originating Router's IP Address can be an IPv6 address according to RFC6515.

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