IPv6 DHCP Unique Identifier

Use this option to control how the IPv6 DHCP Unique Identifier (DUID is set. Auto, the default setting, sets the DUID using the Universal Unique Identifier (UUID) of the server or, if the server is not available, the Link-Layer Address Plus Time (DUID-LLT) method. When set to DUID-LLT, the DUID is set based on the Link-Layer Address Plus Time (DUID-LLT) method.