Related Documentation
Sending Release Messages When Clients Are Deleted
By default, when DHCP relay and relay proxy delete a client, they do not send a release message to the DHCP server. You can override the default behavior and configure DHCP relay and relay proxy to send a release message whenever they delete a client. The release message sent by DHCP relay and relay proxy includes option 82 information.
 | Note: In Junos OS Release 10.1 and earlier, DHCP relay sends a release message to the DHCP server when the client-discover-match statement is included as a DHCP relay override. In Junos OS Release 10.2 and later, you must include the send-release-on-delete statement to configure DHCP relay and relay proxy to send the release message when the client-discover-match statement is included. |
You can use the [edit forwarding-options dhcp-relay dhcpv6] hierarchy level to override the default behavior for DHCPv6 relay agent.
To send a release message:
- Specify that you want to configure override options.
- For DHCP relay agent:[edit forwarding-options dhcp-relay]user@host# edit overrides
- For DHCPv6 relay agent:[edit forwarding-options dhcp-relay dhcpv6]user@host# edit overrides
- For DHCP relay agent:
- Specify that you want DHCP relay and relay proxy (or DHCPv6
relay agent) to send a release message when clients are deleted. [edit forwarding-options dhcp-relay overrides]user@host# set send-release-on-delete
