Don't parse IP addresses with regexen in real code. The OP makes an amusing puzzle (one which I have admittedly not figured out yet), but nothing more. There are far more valid formats for IPv4 than the traditional dotted-quad one. I don't even want to think about all the formats available for IPv6.

Look at Valid IP? for more info.

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: () { :|:& };:

Note: All code is untested, unless otherwise stated

In reply to Re: Re: Can you spot the problem? by hardburn
in thread Can you spot the problem? by dws

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