Specifying the IPv6 DHCP relay include options

You can specify either one or all of the IPv6 DHCP relay include options in the relay-forward message.

The options include the interface-ID, remote-ID, or link layer option. Perform the following steps to include the DHCPv6 relay options.

Enter global configuration mode by issuing the configure terminal command.
```
device# configure terminal
```

Enter interface configuration mode.

device(config)# interface ethernet 1/1/1

Enter the ipv6 dhcp-relay include-options command followed by the required options: interface-ID, remote-ID or link-layer-option.
The following example shows specifying the link layer option.
```
device(config-if-e1000-1/1/1)# ipv6 dhcp-relay include-options link-layer-option
```