<?xml version='1.0'?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
  datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"
  ns="http://www.iana.org/assignments">

  <include href="../_support/iana-registry.rng"/>

  <start>
    <element name="registry">
      <ref name="registryMeta"/>

      <!-- IP OPTION NUMBERS -->
      <element name="registry">
        <ref name="registryMeta"/>
        <zeroOrMore>
          <element name="record">
            <optional><attribute name="date"><ref name="genericDate"/></attribute></optional>
            <element name="copy"><ref name="genericRange"/></element>
            <element name="class"><ref name="genericRange"/></element>
            <element name="number"><ref name="genericRange"/></element>
            <element name="value"><ref name="genericRange"/></element>
            <element name="description"><ref name="richText"/></element>
            <ref name="references"/>
          </element>
        </zeroOrMore>
        <ref name="footnotes"/>
      </element>

      <!-- IPv4 Router Alert Option Values -->

      <element name="registry">
        <ref name="registryMeta"/>
        <zeroOrMore>
          <element name="record">
            <optional><attribute name="date"><ref name="genericDate"/></attribute></optional>
            <element name="value"><text/></element>
            <element name="description"><text/></element>
            <ref name="references"/>
          </element>
        </zeroOrMore>
      </element>

      <!-- IP TIME TO LIVE PARAMETER -->
      <element name="registry">
        <ref name="registryMeta"/>
      </element>

      <!-- IP TOS PARAMETERS -->
      <element name="registry">
        <ref name="registryMeta"/>
        <zeroOrMore>
          <element name="record">
            <optional><attribute name="date"><ref name="genericDate"/></attribute></optional>
            <element name="value"><ref name="genericRange"/></element>
            <element name="description"><ref name="richText"/></element>
            <ref name="references"/>
          </element>
        </zeroOrMore>
      </element>

      <!-- Type-of-Service Value -->
      <element name="registry">
        <ref name="registryMeta"/>
        <zeroOrMore>
          <element name="record">
            <optional><attribute name="date"><ref name="genericDate"/></attribute></optional>
            <element name="protocol"><ref name="richText"/></element>
            <optional><element name="value"><ref name="richText"/></element></optional>
            <optional><element name="note"><ref name="richText"/></element></optional>
          </element>
        </zeroOrMore>
        <ref name="footnotes"/>
      </element>

      <ref name="people"/>
    </element>
  </start>

</grammar>
