Because people didn’t believe it existed….
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The following quality of service levels are available: Concorde, First, Business, and Coach. Concorde class offers expedited data delivery. One major benefit to using Avian Carriers is that this is the only networking technology that earns frequent flyer miles, plus the Concorde and First classes of service earn 50% bonus miles per packet. Ostriches are an alternate carrier that have much greater bulk transfer capability but provide slower delivery, and require the use of bridges between domains. </snippet>
Read the full thing here : http://tools.ietf.org/html/rfc2549
Warning. Do not read in a quiet office – liable to outbursts of laughter. Only for the seriously geeky.
There used to be another RFC for ethernet over wet cat. I cannot for the life of me find it now. If anyone has it, can I have a copy please?