"William H. Magill" <magill at mcgillsociety.org> wrote: > The answer is actually "simple." > > There are some configurations which are "system wide" and some which > are dependent upon the individual user. > > Each user can configure their own "location" profile, which includes > which network interfaces are being used, and how. As a side note, this isn't accurate. Network Locations are not user-specific. Network preferences -- including Locations -- are system-wide settings.