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<a accesskey="3" href="page.php?w=Path_MTU_Discovery&amp;p=2">3.Next</a>
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<p> <b>Path MTU Discovery</b> (<b>PMTUD</b>) is a standardized technique in <a href="page.php?w=computer_networking">computer networking</a> for determining the <a href="page.php?w=maximum_transmission_unit">maximum transmission unit (MTU)</a> size on the network path between two Internet Protocol (IP) hosts, usually with the goal of avoiding <a href="page.php?w=IP_fragmentation">IP fragmentation</a>. PMTUD was originally intended for routers in <a href="page.php?w=IPv4">Internet Protocol Version 4</a> (IPv4). However, all modern operating systems</p><p>
<a accesskey="3" href="page.php?w=Path_MTU_Discovery&amp;p=2">3.Next</a>
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