The packet module should have the ability like here in trex

[WoolenWang]

checkout this: https://github.com/cisco-system-traffic-generator/trex-core/tree/master/src/common/Network/Packet

we need some thing like this. now the packet go module is loose and messy. the packet handle ability should separate with different network layer's header.

which will make users like me easy to understand and use it.

[aregm]

First of all, this is Go and not C++. All definitions are there in the structs, like IPv4Hdr with corresponding member functions - it was done historically to keep all the core IP stack processing together. There are some discrepancies for sure, but pure design elegance was sacrificed to the ease of use and that is why you are here. Feel free to submit PR that resolves "loose and messy" design.