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Don't suggest that the Original Packet Length is an "on-the-wire" len…
…gth. The data in a packet isn't necessarily data exactly as it is on the network; once upon a time, the data provided when capturing corresponded to the octets "on the wire" or "on the air" at the data link layer, but, now, the data provided when capturing might: * include a metadata header that doesn't show up on the wire/air; * be the result of ATM AAL5 reassembly rather than just be raw cells; * represent a USB transaction as seen by the host rather than raw USB traffic; * include padding between chunks of data in an isochronous USB transfer; * etc. And even in the old days, the data might, or might not, include the CRC at the end of a packet. Don't encourage people to think that the Original Packet Length field corresponds to the length on the wire, as it might not. Clean up some other stuff while we're at it.
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