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Date: Mon, 04 Jul 2005 19:40:41 +1000
From: Peter Grehan <grehan@freebsd.org>
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To: Andrew Thompson <thompsa@freebsd.org>
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Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org
Subject: Re: cvs commit: src/sys/amd64/include _types.h src/sys/i386/include
 _types.h src/sys/net if_bridge.c src/sys/netinet ip_var.h       
 src/sys/netinet6 ip6_var.h
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>   Check the alignment of the IP header before passing the packet up to the
>   packet filter. This would cause a panic on architectures that require strict
>   alignment such as sparc64 (tier1) and ia64/ppc (tier2).

  FYI, any modern ppc implementation doesn't require strict alignment 
for integer load/stores though there's a performance penalty for having 
to split the access into smaller ones.

later,

Peter.