<?xml version='1.0' encoding='UTF-8'?>
<?xml-stylesheet type="text/xsl" href="ipv4-tos-byte.xsl"?>
<?oxygen RNGSchema="ipv4-tos-byte.rng" type="xml"?>
<registry xmlns="http://www.iana.org/assignments" id="ipv4-tos-byte">
  <title>IPv4 TOS Byte and IPv6 Traffic Class Octet</title>
  <created>2001-08-15</created>
  <updated>2001-09-06</updated>
  <note>Description:  The registrations are identical for IPv4 and IPv6.

Bits 0-5:  see Differentiated Services Field Codepoints Registry
           (http://www.iana.org/assignments/dscp-registry)</note>
  <registry id="ipv4-tos-byte-1">
    <title>ECN Field (Bits 6-7)</title>
    <xref type="rfc" data="rfc3168"/>
    <registration_rule>RFC Required</registration_rule>
    <record>
      <binary>00</binary>
      <keyword>Not-ECT (Not ECN-Capable Transport)</keyword>
      <xref type="rfc" data="rfc3168"/>
    </record>
    <record>
      <binary>01</binary>
      <keyword>ECT(1) (ECN-Capable Transport(1))</keyword>
      <xref type="rfc" data="rfc3168"/>
    </record>
    <record>
      <binary>10</binary>
      <keyword>ECT(0) (ECN-Capable Transport(0))</keyword>
      <xref type="rfc" data="rfc3168"/>
    </record>
    <record>
      <binary>11</binary>
      <keyword>CE (Congestion Experienced)</keyword>
      <xref type="rfc" data="rfc3168"/>
    </record>
  </registry>
  <people/>
</registry>

