A DHCP unique identifier (DUID) consists of a
two-octet type code followed by a variable number of octets that make up the actual identifier. A
DUID can be no more than 128 octets long (not including the type code). The following types are
currently defined:
Link-layer address plus time
Vendor-assigned unique ID based on Enterprise Number
Link-layer address
ExtremeXOS uses Link-layer address plus time as its default client DUID. To
configure DHCPv6 client identifier type for the client use: