Iptables: Reasons for choosing pre-up/up/post-up rsp. pre-down/down/post-down : <p>Setting up iptables rules, what are the specific reasons for pre-up/up/post-up rsp. pre-down/down/post-down? </p>

<p>E.g setting Default Policies in pre-up and explicit rules in up/post-up?</p>

<p>In my understanding, if I only want to setup e.g iptables-save &lt; ..., it doesn't matter. Am I wrong?</p>
