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Date: Tue, 15 Jan 2013 10:05:51 +0100
From: Igmar Palsenberg <>
Subject: Re: iproute2 and musl (netinet/tcp.h)

>> i think we should provide the TCP_* socket options
>> from linux/tcp.h and hide SOL_TCP under feature
>> test macros as posix only reserves TCP_ for netinet/tcp.h
> Yes, this seems right; I can't find any reference to SOL_TCP being
> allowed or reserved. Actually, SOL_TCP seems to be nonstandard
> nonsense. The correct macro to use seems to be IPPROTO_TCP. See POSIX:

Correct. SOL_TCP is Linux only AFAIK. I've always replace SOL_TCP with IPPROTO_TCP, and
that always worked fine.


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