Can I dial to ET from my cable modem?
Seriously:
There are very few people who are networking wizards. I myself know a fair bit about networking, as much as there is to know about setting up switches and servers etc... though there are barely any questions (that I can find) that people ask.
Maybe random questions if someone is unsure about something at times, even I ask those types of questions from time to time, problem is that barely anyone knows WTF I am going about. ( Or is it just what I ask being really strange?)
Anyway, what I am trying to say is:
There are barely any questions asked and setting up a completely different forum for it takes time which can be spent better elsewhere.
This is all purely my opinion, I am not bashing your idea as it sounds good, it's just that there are barely that many questions and discussions about networking that warrant a new forum.