DHCPv6 Identity

DUID & IAID Calculator

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Device Information

Input the physical details of the device.

MAC Address

Interface Name

DUID-LLT (Type 1)

Link-layer address plus time

000100013182192A000C294FA3D2

DUID-LL (Type 3)

Link-layer address

00030001000C294FA3D2

IAID (Identity Association ID)

Generated from interface name

0x7C6BAFEC

DHCPv6 Identification

DUID (DHCP Unique Identifier): A globally unique identifier for a client or server. DUID-LLT is the most common, combining the link-layer address with a timestamp to ensure uniqueness even if hardware is replaced.

IAID (Identity Association Identifier): A 32-bit identifier chosen by the client to identify a specific interface. Many clients derive this by hashing the interface name (e.g., "eth0").

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