The 7210 SAS provides the option to configure a service object, which is configured as client-facing or both, as trusted or untrusted with the config>service>vpls>sap>dhcp6> [no] trusted command.
Use the trusted command to process and forward a relay-forward message received on a client-facing service object (when DHCPv6 snooping is enabled).
Use the no trusted command to disable processing and forwarding of relay-forward message received on a client-facing service object (when DHCPv6 snooping is enabled).