++ for pointing out the B vs b concern, but you're wrong about vec. And that code is an eval $REDFLAG;, you should do it thusly: my ($ver, $hlen, $tos, $len) = map pack "B*", unpack "A4A4A8A16", unpack "B*", $foo; However, that will not honour the network byte ordering in $len.

Makeshifts last the longest.

In reply to Re: B versus b by Aristotle
in thread IP Header by Anonymous Monk

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