RFC Errata
RFC 8287, "Label Switched Path (LSP) Ping/Traceroute for Segment Routing (SR) IGP-Prefix and IGP-Adjacency Segment Identifiers (SIDs) with MPLS Data Planes", December 2017
Source of RFC: mpls (rtg)See Also: RFC 8287 w/ inline errata
Errata ID: 6389
Status: Verified
Type: Editorial
Publication Format(s) : TEXT
Reported By: James Bensley
Date Reported: 2021-01-19
Verifier Name: Deborah Brungard
Date Verified: 2021-02-26
Section 5.2 says:
5.2. IPv6 IGP-Prefix Segment ID
The IPv6 IGP-Prefix Segment ID is defined in [SR]. The format is as
specified below:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| IPv6 Prefix |
| |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Prefix Length | Protocol | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
IPv6 Prefix
This field carries the IPv6 prefix to which the Segment ID is
assigned. In case of an Anycast Segment ID, this field will carry
the IPv4 Anycast address.
It should say:
5.2. IPv6 IGP-Prefix Segment ID
The IPv6 IGP-Prefix Segment ID is defined in [SR]. The format is as
specified below:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| IPv6 Prefix |
| |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Prefix Length | Protocol | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
IPv6 Prefix
This field carries the IPv6 prefix to which the Segment ID is
assigned. In case of an Anycast Segment ID, this field will carry
the IPv6 Anycast address.
Notes:
Copy-pasta reusing the IPv4 IGP-Prefix Segment ID description for the IPv6 IGP-Prefix Segment ID description, and in the case of an IPv6 Anycast Segment ID it states that an IPv4 prefix should be entered into the IPv6 Prefix field.