unofficial-rtos-docs
Appendix C - NetX Duo DHCPv6 unique identifiers (DUIDs)
DUID Type
Code
Description
DUID-LLT
1
Link layer plus time; identifier based on link layer address and time
DUID-EN
2
Enterprise; Assigned by Vendor Based on Enterprise Number
DUID-LL
3
Link layer; Based on Link-layer Address only