Towards a "minimalist newtork"

My definition of a "minimalist network" is exclusively an 
enumeration of what physical components. In my case that is two 
laptops with electrically compatible Ethernet hardware and one 
Cat6 patch. *NO* routers/etc/etc/... .

 From my reading, primarily Wikipedia, I believe what I'm aiming 
at would be classed as either PPPoE or PPPoEoE. Although a Debian 
Jessie user I have found some LFS documentation very helpful due 
its point of view.

With that in mind, I am currently reading 
http://www.linuxfromscratch.org/lfs/view/stable-systemd/ (Jessie 
uses systemd} and I am searching archives at 
https://www.google.com/search?q=ethernet+site:linuxfromscratch.org&domains=linuxfromscratch.org 
.

Any further reading suggestions?
TIA


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