sub valid { (grep { (m/^(\d{1,3})$/ and $_ <= 255) or return 0 } split
+(/[.]/, shift)) == 4 }

[download]

update: changed (note the 'or return 0').

-- ar0n, Minimalist by nature

In reply to (ar0n) Same thing, one line by ar0n
in thread Check IP addresses for good form by Ground Control

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