Wow, the 1.6.2 is the first vanilla I've observed that actually sends the 0xfa "Plugin Message" packet to the server. Need to implement that in the server (I have 1.6.2 support otherwise working 
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1.6.2 supported in rev 1669. I think this was the fastest protocol adoption ever - only a few hours after the version was released
)1.6.2 supported in rev 1669. I think this was the fastest protocol adoption ever - only a few hours after the version was released