Correct, Jagex do have the option to IP ban you which will cause a chain reaction.
All I can say is be prepared to lose the account you're botting. Don't bot mains and then complain they get banned.
I only usually bot 2 accounts on the 1 IP address. Because I do have hyper VM running with a /27 of public IP space I can actually run quite a few bots. It gives me the ability to run approx 60 bots from the one server.