Problem. 

printf "%012x\n", hex( 'fffffffffff0')+1;;
Integer overflow in hexadecimal number at (eval 23) line 1, <STDIN> li
+ne 22.
Hexadecimal number > 0xffffffff non-portable at (eval 23) line 1, <STD
+IN> line 22.
0000ffffffff

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In reply to Re^2: Increment MAC address by BrowserUk
in thread Increment MAC address by mosh

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