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Date: Fri, 15 Dec 2006 13:44:41 +0000
From: "Bruce M. Simpson" <bms@FreeBSD.org>
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To: Andre Oppermann <andre@freebsd.org>
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Cc: Randall Stewart <rrs@FreeBSD.org>, src-committers@FreeBSD.org,
	cvs-all@FreeBSD.org, cvs-src@FreeBSD.org
Subject: Re: cvs commit: src/lib/libc/net Makefile.inc sctp_sys_calls.c  
 src/sys/sys param.h
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Andre Oppermann wrote:
>
> What makes these sctp_* syscalls so special as opposed to their
> generic and protocol agnostic counterparts?
They're used for operations which do not have a direct correspondence in 
the existing functions, i.e. connecting to multihomed peers, and dealing 
with one-to-many sockets.

See Section 9.3-9.12, UNIX Network Programming Vol 1 3e for more info.

Regards,
BMS