RFC 9260, "Stream Control Transmission Protocol", June 2022

Errata ID: 8402
Status: Reported
Type: Technical
Publication Format(s) : TEXT, PDF, HTML
Reported By: Iñaki Baz Castillo
Date Reported: 2025-05-02
Edited by: G Fairhurst
Date Edited: 2026-02-12

Section 5.1.6 says:

If the T1-init timer expires at "A" after the INIT or COOKIE ECHO
chunks are sent, the same INIT or COOKIE ECHO chunk with the same
Initiate Tag (i.e., Tag_A) or State Cookie is retransmitted and the
timer is restarted.

It should say:

If the T1-init timer expires at "A" after the INIT chunk is sent, 
the same INIT chunk with the same Initiate Tag (i.e., Tag_A) is 
retransmitted and the T1-init timer is restarted. If the T1-cookie 
timer expires at "A" after the the COOKIE ECHO chunk is sent, the 
same COOKIE ECHO chunk with the same State Cookie is retransmitted 
and the T1-cookie timer is restarted.

Notes:

The original text said the T1-init timer is cancelled at "A" upon receipt of INIT ACK chunk from "Z", so it is impossible that the T1-init timer expires at "A" after the COOKIE ECHO chunk is sent (since COOKIE ECHO chunk is immediately sent after INIT ACK chunk is received). The text is updated to clarify two cases.

Report New Errata