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What is 169.254.x.x IPv4 address?

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169.254.x.x is a link-local IP address that gets assigned automatically when, generally, DHCP is not available. On Windows operating system, this is called APIPA (Automatic Private IP Addressing). RFC 3927 defines the 169.254.0.0/16 address block for use in the link-local assignments. Note that routers are not supposed to route traffic from this address block.

Reference:
https://en.wikipedia.org/wiki/Link-local_address
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