Subject: Re: m_copy - doesn't copy if M_EXT is set.
To: Darren Reed <>
From: None <>
List: tech-net
Date: 10/04/1999 00:06:27
>It would appear that the behaviour of m_copy()/m_copym() is changed,
>depending on whether or not M_EXT is set.  If M_EXT is set, then the

	I believe the above is the normal behavior, and this has been there
	for a very long time.  See TCP/IP Illustrated volume 2, section 2.9.
	To handle, for example, IPsec ESP header (which requires total
	modification of the packet), we reimplement mbuf chain copying,
	without cluster sharing, in few places.