IPv4 addresses are 32-bit numbers. Thinking of them as 4 individual bytes is counter-productive and leads to extremely convoluted code. nextIP should be: 

sub nextIP {
   my ($ip) = @_;
   return $ip+1;
}

[download]

exit shouldn't be called from nextIP. That's a user-interface detail while nextIP is clearly not an I/O function. A wrap can be detected by nextIP returning 0.

In reply to Re: IP Iterator by ikegami
in thread IP Iterator by camlet

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