I&#39;m trying to construct a regular expression to match valid IP address, without leading zeroes (i.e<br><a href="http://1.2.3.4">1.2.3.4</a>, <a href="http://254.10.0.0">254.10.0.0</a>, but not 324.1.1.1, nor <a href="http://010.10.10.1">
010.10.10.1</a>)<br><br>This is what I come up with, and it does not work.<br><br>r&#39;(^[12]?\d{0,2}\.){3,3}[12]?\d{0,2}&#39;<br><br>What am I doing wrong? <br>Any common knowledge IP matching RE?<br><br>Thanks,<br>Dan<br>