DHCPv6 Prefix-Length Hint Issues, May 2017
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DHCPv6 Prefix Delegation allows a client to include a prefix-length hint value in the IA_PD option to indicate a preference for the size of the prefix to be delegated, but it is unclear about how the client and server should act in different situations involving the prefix-length hint. This document provides a summary of the existing problems with the prefix-length hint and guidance on what the client and server could do in different situations.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.