Libertarians like Ron Paul believe in the rule of law. He has never supported anarchy. They've always been two separate ideologies.
Incorrect. Ron Paul is a closet anarchist - he has agreed in interviews with anarcho-capitalists and voluntaryists that the ultimate goal is a truly voluntary society and that's what he's working towards.
He has also cited Murray Rothbard (*the* anarcho-capitalist) numerous times in the 2007-2008 debates, in speeches, interviews, etc.
I, like he, believe that minarchism and the rule of law of limited government (the US Constitution) is merely preferable to other forms of government and much moreso than what we have now, and is a potential stepping stone to a truly free society.
Though of course there are libertarians who simply support a limited government rule of law, minarchism, etc... a very minimalist government - after all, libertarianism is a very wide spectrum.
But as someone pointed out, when you take the concept and even practicality of liberty to it's logical conclusion - you end up with anarchocapitalism. Which is really nothing other than a truly 100% capitalist society, with private enterprise filling in for the role of government in every aspect and service the government provides. All elements of risk would be handled by insurance agencies, defense / police by private defense agencies, law through private arbitration, and punishment would be focused on making the victim whole (and doling out appropriate eye-for-an-eye retribution, as well as potentially indentured servitude to criminals in some cases, depending on proportionality) as opposed to making the victim endure the crime, then make the victim pay for the courts through lawyers and taxation, then make the victim pay for the potentially lifelong incarceration of the criminal through taxation, and on and on. But I digress...
Read some Rothbard, Hoppe, Block, Ruwart, et al
and +rep for denison for well-thought out and accurate responses to recent 'objections'.