One of the tools I always like to have to double-check the network settings when I enter them is something that will take information like "192.168.1.2/26" and provide the other information you will need like the network range, broadcast, etc... In my spare time I've been working on some applications for Android phones including one called "ipcalc" which does this. If you have an Android phone, you can find it in the marketplace, just search for "ipcalc".
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