If you travel with a laptop, you know the drill. You're constantly opening up System Preferences→Network so that you can switch between Internet settings: Ethernet at the office, Wi-Fi at home. Or maybe you simply visit the branch office from time to time, and you're getting tired of having to change the local access number for your ISP each time you leave home (and return home again).
The simple solution is the Location submenu, which appears once you have set up more than one Location. As Figure 18-7 illustrates, all you have to do istell it where you are. Mac OS X handles the details of switching Internet connections.
Figure 18-7. The Location feature lets you switch from one "location" to another just by choosing its name— either from the menu (top) or from this pop-up menu in System Preferences (bottom). The Automatic location just means "the standard, default one you originally set up." (Don't be fooled: Despite its name, Automatic isn't the only location that offers multihoming, described earlier in this chapter.)
To create a Location, which is nothing more than a set of memorized settings, open System Preferences, click Network, and then ...