If you do use a regular expressions to parse IPv4 in decimal, you could use: 
(1?\d\d?|2[0-4]\d|25[0-5])(\.(1?\d\d?|2[0-4]\d|25[0-5])){3}

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In reply to Re: Don't Use Regular Expressions To Parse IP Addresses! by sieve
in thread Don't Use Regular Expressions To Parse IP Addresses! by ybiC

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