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Date:	Tue, 17 Aug 2010 14:31:20 +0200
From:	Paul Rolland <>
Subject: IPv6 raw socket and recvfrom


I'd like someone to clarify the behavior I can expect from a RAW IPv6
socket _in Linux_ :
 - Raw IPv4 sockets : recvfrom() payload contain all the IP header,
   including src ip, dst ip, etc...

 - Raw IPv6 sockets : so far, recvfrom returns me only the payload. I've
   added the HDRINCL options, but it seems that this is a no-op in

I've reviewed RFC 3542, which states that I'm not to expect ip6 header, but
often "there is more than one way to do it", and I'd like to be sure I'm
not missing something obvious


PS : I'm not subscribed to netdev, so please answer directly...

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