When the going gets tough with a computer, we often contemplate whimping out to the nuclear option (AKA reformatting and starting over). But what a relief it was to discover the changeip command found in OS X server. This is quite useful when network changes are made to the network, such as when changing the ip addressing scheme. When running a server and making a network address change, an admistrator may need to do more than to change the IP address in the Network system preference. The original IP address may also be embedded within the configuration settings of some network services such as OS X’s Open Directory.

So in a nutshell, when changing a server’s network settings, make sure that ALL your IP addresses are changed to the new address. It’s the only way to do it on the Interweb.

Read more at http://discussions.apple.com/thread.jspa?messageID=1983848�.