Mega Code Archive
Constrain our dotted-quad to use 3-digit numbers in the range 0 to 255
<![CDATA[
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.rntsoft.com" xmlns="http://www.rntsoft.com"
elementFormDefault="qualified">
<xs:simpleType name="ipv4_Address">
<xs:restriction base="xs:string">
<xs:pattern
value="(([0-9]{1,2} | [1][0-9]{2} | [2][0-4][0-9] | [2][5][0-5])\.){3}
([0-9]{1,2} | [1][0-9]{2} | [2][0-4][0-9] | [2][5][0-5])" />
</xs:restriction>
</xs:simpleType>
</xs:schema>
]]>