this just leaves '$bgp_ip' blank

Sorry, I can't reproduce this, your code actually works for me. Perhaps you just made a typo? Always Use strict and warnings! However, at the moment the code is doing the same as tybalt89's XOR solution (Update: at least on your sample input that is) - if you want the logic to be the way you describe (.5 becomes .6 and vice versa), you need to reverse the +/- operations. On the other hand, tybalt89 made a good point here - are you sure about the logic you described?

In reply to Re: Need to calculate IP address by haukex
in thread Need to calculate IP address by ddrew78

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