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Fit AP V200R010C00 Command Reference

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dhcpv6 duid

dhcpv6 duid


The dhcpv6 duid command configures a DUID for the DHCPv6 device.

By default, the device generates a DUID based on the link-layer (LL) address.


dhcpv6 duid { ll | llt | duid }






Configures the device to generate a DUID based on the link-layer address (MAC address).



Configures the device to generate a DUID based on the link-layer address (MAC address) plus time.



Specifies the DUID of the device.

The value is a hexadecimal string with an even number (in the range of 8 to 28) of characters. The value contains only combinations of digits 0 to 9, uppercase letters A to F, and lowercase letters a to f.


System view

Default Level

3: Management level

Usage Guidelines

A DUID identifies a DHCPv6 device. Each DHCPv6 server or client has a unique DUID. Servers use DUIDs to identify clients and clients use DUIDs to identify servers. When this command is run, a new DUID is stored in the :/dhcp/dhcp-duid.txt file of the storage device. You can run the display dhcpv6 duid command to check the DUID of the device.

  • If the AP's DUID is generated through the LL or LLT mode, and the system MAC address of the AP changes, the corresponding DUID also changes.

  • If a static binding between the AP's DUID and the IPv6 address or IPv6 prefix is configured on the DHCPv6 server and the DUID changes, you need to manually change the corresponding binding relationship.


# Configure the device to generate a DUID based on the link-layer address.

<Huawei> system-view
[Huawei] dhcpv6 duid ll
Warning: The DHCP unique identifier should be globally-unique and stable. Are you sure to change it? [Y/N]y 
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Updated: 2019-07-18

Document ID: EDOC1100064353

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