There is a currently private beta site for Network Engineering here:
The beta is new, but seems to be garnering a decent following so far, and will probably ramp up participation when it becomes a public beta site. I think this new site should exist...as this is a core role/area within IT. But only if these topics aren't to be covered by ServerFault. After all, why have a separate site at all if the topics can and should be covered here?
Given that the ServerFault FAQs state that a question can be about:
Network routing, switches, and firewalls
and the site name is Server fault...is the idea to get back to a core based on the name of the site, centering around questions regarding server/application administration and moving networking questions to their own site, eliminating this from the FAQs and acceptable topics? Or do sites like this new Network Engineering one exist as supplements to the larger sites like SF and SO for more granular or specialized help?
If so, what happens when these questions overlap (ie. serverA cannot communicate with serverB)?