Sorry Howard, I appear to have deleted the original
thread.
Howard,
You mentioned that computing the network mask from
a 6 bit field would be detremental causing unnecessary
CPU overhead, however, this CPU overhead would only be
in nano-seconds compared to the serialisation delay
i.e getting the extra bits on and off the wire.
As a counter argument the first byte of an IP header
is generally 0x45, whereby the first 4 bits represent
the IP version and the least significant 4 bits
represent the number of 32 bit quantities making up
the IP header.
Just a thought,
Phil.
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