encapsulation
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TCPoXML datagrams encapsulated by IPoXML MAY omit the <?xml?> header
as well as the <!DOCTYPE> declaration.
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UDPoXML datagrams encapsulated by IPoXML MAY omit the <?xml?> header
as well as the <!DOCTYPE> declaration.
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... In order to facilitate the gradual introduction of BLOAT into the
public Internet, BLOAT MAY be encapsulated in IP as in [RFC2003] to
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