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RE: [802.3af] Diode bridge both on the spare and data pairs

Personally, if we are trying to limit leakage, we should limit leakage.
Polarity insensativity does not necessarily mandate limited leakage, maybe
one implementation of it does, but will every implementation?  If you are
lobbying for polarity insensitity, lets discuss that on its own merits.
The problem that has been identified is leakage / back powering which is
quite seperate from polarity insensitity.