Great post, neat little trick.
You can basically do the same thing with a router. Because a router retains the ip address, it's harder to switch. So telling the router what to retain will make the modem follow. Or something like that. Whenever I need to switch IPs I just reset my modem first then go through the router wizard to capture that IP for me. But that's just me.
Good post MrJosh, this will help someone.
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