Automatic Private IP Addressing

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aliases:

• APIPA

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An addressing system in place to use special IP addresses when something goes wrong with the Dynamic-Host-Configuration-ProtocolDHCP server or with the host that needs it.

APIPA addresses always begin with 169.254.x.x.

APIPA is triggered when a DHCP server takes too long to offer an IP address lease to the client.

Apparently the name APIPA is Microsoft-only. Official documentation call this protocol IPv4 Link Local (IPv4LL).