eth0 does not come up when I execute ifconfig, nor does it come up when I grep dmesg. However an interface called sit0 comes up. Something to do with IPv6-in-IPv4 (to reference ifconfig). Is this possibly a problem with my ethernet cord? Another thing I did was I removed my router's IP address from /hosts, and added loopback and the IPv6 line, like how you showed me in your post, venam.
I don't believe I am running an ethernet manager. I have a very small installation of CRUX. VERY small. Nothing X related AT ALL is installed. Just a set of basic programs and the kernel. I have yet to give manual connection a go, I want to see whats going on with sit0 appearing and not eth0 first.

EDIT: I think this has to do with my kernel config aswell... I'm not a very experienced fella when it comes to configs, so I'll do some research on that, but I feel like that can be something aswell.