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Inserting DHCPv6 Interface-ID Option (Option 18) In DHCPv6 Packets
You can configure DHCPv6 relay agent to insert the DHCPv6 Interface-ID (Option 18) in the packets that the relay sends to a DHCPv6 server. You can optionally include a prefix, which can include any combination of hostname, logical system name, and routing instance name. You can also specify that the packets include the textual interface description instead of the interface identifier.
 | Note: If you configure the optional Steps 2 or 3, and the specified information does not exist (for example, there is no interface description), DHCPv6 relay ignores the optional configuration and inserts the interface identifier in the packets. |
To insert the DHCPv6 Interface-ID option (Option 18) in DHCPv6 packets :
- Configure the DHCPv6 relay to include Option 18. [edit forwarding-options dhcp-relay dhcpv6]user@host# edit relay-agent-interface-id
- (Optional) Specify the prefix to include in Option 18. [edit forwarding-options dhcp-relay dhcpv6 relay-agent-interface-id]user@host# set prefix prefix
- (Optional) Specify that the Option 18 include the textual
description of the interface. You can specify either the logical interface description or the device interface description. [edit forwarding-options dhcp-relay dhcpv6 relay-agent-interface-id]user@host# set use-interface-description (logical | device)
