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client-discover-match (DHCP Relay Agent)


Hierarchy Level


Configure the match criteria DHCP relay uses to uniquely identify DHCP subscribers or clients when primary identification fails. The options are mutually exclusive.


By default, DHCP uses the option60-and-option82 option.



(Optional) Allow only one client device to connect on the interface. If the client device changes, the router deletes the existing client binding and creates a binding for the newly connected device.


The overrides client-discover-match incoming-interface configuration deletes and replaces the existing binding when a new device connects. This action differs from the overrides interface-client-limit 1 statement, which retains the existing binding rejects the newly connected client.


(Optional) Use option 60 and option 82 information to identify subscribers.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 9.4.

incoming-interface option added in Junos OS Release 13.3.