Design 215

IPv6 Address Types Explained: Unicast, Multicast, Anycast Guide for 2025

What are the IPv6 address types? This is the main topic of our comprehensive guide. My previous articles discussed IPv4 address classes, classless and classful addressing schemes, and special-purpose IP addresses. We have also learned about unicasting, multicasting, and broadcasting in IPv4 addresses. Similarly, IPv6 addresses also contain different types, such as unicast addresses, multicast… Read more

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What is a Link-Local IPv6 Address – Exclusive Introduction

Routers configured with dynamic routing protocols such as OSPF or EIGRP must send and receive routing protocol messages with their directly connected neighbors. The routers exchange messages between neighbors on the same subnet. These messages are always sent from the router’s source IPv4 address. Link-local IPv6 addresses are perfect for this purpose. The address also… Read more

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Hand pointing to IPv6 diagram with OUI, Device ID, FFFE, and Interface ID elements on a screen.

EUI-64 Process and Randomly Generated IPv6- Easy to understand Guide

After a client receives a Stateless Address Autoconfiguration (SLAAC) message, often via a stateless Router Advertisement (RA), it must generate its Interface ID. Unlike stateful DHCPv6, SLAAC provides the prefix portion (typically /64) from the RA, while the client autonomously creates the 64-bit Interface ID. This ID can be derived from the MAC address using… Read more

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