<?xml version='1.0' encoding='UTF-8'?>
<?xml-stylesheet type="text/xsl" href="post-stack-first-nibble.xsl"?>
<?xml-model href="post-stack-first-nibble.rng" schematypens="http://relaxng.org/ns/structure/1.0" ?>
<registry xmlns="http://www.iana.org/assignments" id="post-stack-first-nibble">
  <title>Post-Stack First Nibble</title>
  <created>2024-12-16</created>
  <updated>2025-07-10</updated>

  <registry id="post-stack-first-nibble">
    <title>Post-Stack First Nibble</title>
    <xref type="rfc" data="rfc9790"/>
    <registration_rule>Standards Action</registration_rule>
    <record date="2024-12-16">
      <protocol>DetNet</protocol>
      <value>0x0</value>
      <description>DetNet Control Word</description>
      <xref type="rfc" data="rfc8964"/>
    </record>
    <record date="2024-12-16" updated="2025-07-01">
      <protocol>NSH</protocol>
      <value>0x0</value>
      <description>NSH Base Header, payload</description>
      <xref type="rfc" data="rfc8300"/>
    </record>
    <record date="2024-12-16">
      <protocol>PW</protocol>
      <value>0x0</value>
      <description>PW Control Word</description>
      <xref type="rfc" data="rfc4385"/>
    </record>
    <record date="2024-12-16">
      <protocol>DetNet</protocol>
      <value>0x1</value>
      <description>DetNet Associated Channel</description>
      <xref type="rfc" data="rfc9546"/>
    </record>
    <record date="2024-12-16">
      <protocol>MPLS</protocol>
      <value>0x1</value>
      <description>MPLS Generic Associated Channel</description>
      <xref type="rfc" data="rfc5586"/>
    </record>
    <record date="2024-12-16">
      <protocol>PW</protocol>
      <value>0x1</value>
      <description>PW Associated Channel</description>
      <xref type="rfc" data="rfc4385"/>
    </record>
    <record date="2024-12-16">
      <protocol>NSH</protocol>
      <value>0x2</value>
      <description>NSH Base Header, OAM</description>
      <xref type="rfc" data="rfc8300"/>
    </record>
    <record>
      <protocol/>
      <value>0x3</value>
      <description>Unassigned</description>
    </record>
    <record date="2024-12-16">
      <protocol/>
      <value>0x4</value>
      <description>Reserved</description>
      <xref type="rfc" data="rfc9790"/>
    </record>
    <record date="2024-12-16">
      <protocol>BIER</protocol>
      <value>0x5</value>
      <description>BIER Header</description>
      <xref type="rfc" data="rfc8296"/>
    </record>
    <record date="2024-12-16">
      <protocol/>
      <value>0x6</value>
      <description>Reserved</description>
      <xref type="rfc" data="rfc9790"/>
    </record>
    <record>
      <protocol/>
      <value>0x7-0xF</value>
      <description>Unassigned</description>
    </record>
  </registry>
  <people/>
</registry>
