TODO: Rewrite network stack.

[Alessandro Rubini]

> The most notable is lwIP (http://savannah.nongnu.org/projects/lwip/).

I'm not happy at all about this code base, it looks quite ugly and
old-fashioned. It's not the barebox kind of quality. I'd stay with the
current code rather than lwip, despite the number of users.

If any, I'd evaluate picotcp (https://github.com/tass-belgium/picotcp).

/alessandro