From: Harald Welte <[EMAIL PROTECTED]>
Date: Thu, 4 Aug 2005 00:03:53 +0200

> However, all nfnetlink-based protocols are supposed to be both endian
> and 32/64 as well as alignment (*) safe.   the protocol definitions
> always use u_intXX_t types, all network byte order, and no kernel pointers
> passed to userspace or similar crap ;)

You cannot use "u64" objects, even though that is supposed to
be a portable type.  i386 does not align u64's on an 8-byte
boundary, whereas every sane platform in the world (including
x86_64) does.

This is where the compatability problems come from.
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