In my IPv6 classes, I always teach the basic IPv6 messages as seen on the wire. There’s so much new stuff, such as Router Advertisements, Duplicate Address Detections, Neighbour Solicitations, and so on. Therefore, I’m using a rather simple packet capture showing the starting process of a client getting its addresses.

For the last 10 years, I used this capture, which I took on a Knoppix Linux along with a German Speedport router, in which SLAAC was used for getting the addresses. However, it turned out that in enterprise-grade networks, stateful DHCPv6 is used more commonly. Hence, I did it again and captured the very first IPv6 messages as seen on an IPv6 node, but this time on a Windows 11 PC and a Debian 13, along with stateful DHCPv6.

Continue reading Basic IPv6 Messages (v2): Wireshark Captures →