Generalized UDP Source Port for DHCP Relay, March 2018
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This document defines an extension to the DHCP protocols that allows a relay agent to use any available source port for upstream communications. The extension also allows inclusion of a DHCP option that can be used to statelessly route responses back to the appropriate source port on downstream communications.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.