IPv4 and IPv6 analysis

We'll now take a look at the differences between IPv4 and IPv6 and learn about issues and features such as the fragmentation of these packets, broadcast storms, and flags within the IPv4 and the IPv6 header.

What we have is some data from a packet capture going to a website which was encrypted, so that's why we see a lot of TLS in the protocol information:

And we see that we have Application Data in the Info column, which is all of the encrypted data transmitting back and forth to the web server. Go to IPv4 in the packet details, expand that, and we can take a look at the information in the IPv4 header:

We can see that, right after Internet Protocol Version 4, it's saying that it's Version: 4; otherwise, it will show Version 6. It also has the Header Length, which is the number of bytes in the header. Sometimes, the Header Length can fluctuate, so it defines how big that header is so that the application knows where the differentiating point is between the header and...