0 1 2 15 16 31

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0 1 2 3 23 24 31

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0 1 2 3 4 31

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0 1 2 3 4 5 31

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4.1 (IP). , , .

IP- , . , , 2**16(.. 65536) , 7 , 24 . , , 2**8(.. 256) 2**16 , 14 , 16 . , , 256 , 21 8 . , IP- , . .