Does the S series switch used as the DHCP relay agent support QinQ

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On an S series switch excluding the S1700, the DHCP relay function can be configured on QinQ termination sub-interfaces.

Other related questions:
Does the S series switch used as the DHCP relay agent support gateway failover
Starting from V100R006C00, the DHCP relay agent on the S series switches excluding the S1700 supports gateway failover. When the active gateway fails to obtain IP addresses, the standby gateways take over and obtain IP addresses.

Does the S series switch used as the DHCPv6 relay agent support PD relay
The S series switch (excluding the S1700) used as the DHCPv6 relay agent supports PD relay starting from V100R006C00. The switch can query, delete, and automatically generate routing information in the DHCPv6-PD table. You can manually configure routing information in the DHCPv6-PD table. The routing information in the DHCPv6-PD table is not lost after the switch restarts.

Do S series switches support the DHCP server polling function on a DHCP relay agent
When functioning as a DHCP relay agent, the S series switch excluding the S1700 supports the DHCP server polling function on a DHCP relay agent starting from V100R006C00. By default, the DHCP server polling function on a DHCP relay agent is disabled. You can enable the DHCP server polling function on a DHCP relay agent by configuring ip relay address cycle in the system view.

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