Licensing Requirements and Limitations for DHCPv6

Other network elements are not required.

DHCPv6 is a basic feature of a switch and is not under license control.

All models of S2720, S5700, and S6700 series switches support DHCPv6.

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

In V200R010C00 and later versions, L3 sub-interfaces support the DHCPv6 function.
In V200R011C00 and later versions, the VLANIF interface of a super-VLAN on a switch supports the DHCPv6 function.

In V200R013C00 and later versions, Layer 3 VXLAN gateways support the DHCPv6 relay function. VBDIF interfaces functioning as gateways on distributed gateway devices use the same IPv6 address. If Layer 3 VXLAN gateways are distributed gateways and the IPv6 address is used to communicate with the server, the response packets from the server are forwarded to the incorrect distributed gateways (devices that do not send DHCPv6 request packets). To resolve this issue, you need to run the dhcpv6 relay source-interface Loopback interface-number command on each distributed gateway to specify the IPv6 address of the loopback interface as the source IPv6 address of the DHCPv6 relayed packets for ensuring that response packets from the server can be forwarded to the correct distributed gateways.
In V200R013C02 or a later version, after 1 to 1 VLAN mapping is configured on a device, DHCPv6 relay can be enabled on the VLANIF interface corresponding to the mapped VLAN.
When a VRRP6 device functions as a DHCPv6 relay agent, the interface that has the DHCPv6 relay function configured does not forward DHCPv6 request packets when the interface is in VRRP6 backup state.
In versions earlier than V200R013C00, DNS information cannot be allocated to terminals in DHCPv6 PD scenarios because DNS information cannot be contained in RA packets.