IAID Calculator

Calculate Identity Association Identifier (IAID) for DHCPv6 interfaces. Generate IAIDs from interface index, name, MAC address, or custom values with OS-specific conventions.

Quick Examples

IAID Configuration

Select method to generate Identity Association Identifier

Network interface index (0-4294967295)

Network Interface Naming Guide

Common interface naming conventions across different operating systems

Linux
eth0, eth1, ... Traditional Ethernet naming (older systems)
ens3, enp3s0, ... Predictable naming (systemd): en=ethernet, s=slot, p=port
wlan0, wlp2s0, ... Wireless interfaces: wl=wireless
lo Loopback interface (127.0.0.1)
Windows
Ethernet Default wired connection name
Wi-Fi Default wireless connection name
Local Area Connection Legacy naming
{GUID} Interface GUID (used internally)
macOS
en0 Primary Ethernet or built-in Wi-Fi
en1, en2, ... Additional network interfaces
bridge0 Network bridge interface
lo0 Loopback interface
FreeBSD
em0, igb0 Intel Ethernet (em=1G, igb=multi-G)
re0, rl0 Realtek Ethernet
wlan0 Wireless interfaces
lo0 Loopback interface