Technical Summary
This document updates RFC 4960 by defining a method for the sender of
a DATA chunk to indicate that the corresponding SACK chunk should be
sent back immediately and not be delayed. It is done by specifying a
bit in the DATA chunk header, called the I-bit, which can get set
either by the SCTP implementation or by the application using an SCTP
stack. Since unknown flags in chunk headers are ignored by SCTP
implementations, this extension does not introduce any
interoperability problems.
Working Group Summary
There was consensus to adopt this as a WG document, review by the WG,
and agreement by the WG to finally publish this.
Document Quality
This document is seen as ready to publish.
FreeBSD supports this extension since FreeBSD 7.2, released May 2009.
The Linux kernel supports it also (accessibility by the user was added
recently to netinet/sctp.h).
Personnel
The document shepherd is: Gorry Fairhurst, <gorry@erg.abdn.ac.uk>.
The responsible AD is: Spencer Dawkins <spencerdawkins.ietf@gmail.com>