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    SubjectRe: [PATCH 00/03][RESUBMIT] net: EtherIP tunnel driver
    On Sun, Sep 24, 2006 at 09:07:43PM -0400, Valdis.Kletnieks@vt.edu wrote:
    > On Sat, 23 Sep 2006 15:27:36 +0200, Joerg Roedel said:
    >
    > > (I assume you are speaking of the position of the 3 in the header). The
    > > RFC is not clear at this point. It defines that the first 4 bits in the
    > > 16 bit Ethernet header MUST be 0011. But it don't defines the
    > > byteorder of that 16 bit word nor if the least or most significant bit
    > > comes first.
    >
    > Unless stated otherwise, it's pretty safe to assume that all "on the wire" data
    > mentioned in an RFC is in 'network byte order'. That's why hton*() and ntoh*()
    > functions exist...

    Yes. Thats what the OpenBSD people did :-)
    The problem with the header is the bitorder. The OpenBSD people assumed
    that the least significant bits come first in the 16-bit header.

    > Is there something in the RFC that suggests that a byte order other than
    > 'network order' is possible/acceptable there?

    No. The RFC states nothing at all about byte- or bitorder. That is why
    the RFC is ambigious at this point.
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