These pages contain information detailing the different header formats for common networking protocols. They started out as documentation for
SendIP but kindof grew off at a tangent from that. They do not, largely, contain any information on when you might want to use the various fields, or even what you might want to set them to, merely what you can set them to. Most of the infomration here comes straight out of the relevant RFCs. More protocols and updates will be added over time, as and when I need them or somebody asks for them. So, here are the protocols...
Internet Protocol. The protocol which encapsulates almost everything else seen on the internet. Version 4 is widely used, but version 6 also exists and is used.