Enabling client offline detection

This feature enables the DHCPv6 relay agent to detect the status of ND entries. After an ND entry ages out, the DHCPv6 relay agent considers the client offline and deletes the relay entry for the client. For more information about ND, see "Configuring basic IPv6 settings."

1. Enter system view.

   system-view

2. Enter interface view.

   interface interface-type interface-number

3. Enable client offline detection.

   ipv6 dhcp client-detect

   By default, client offline detection is disabled.