Does Safari on iOS support the DNS Prefetch directive?

Question

I've recently come across the DNS Prefetch directive as part of the HTML5 Boilerplate template. According to Wikipedia:

Prefetching is not currently explicitly defined by any accepted standards, but Mozilla have announced work on an Internet Draft, that will match the implementation in Firefox.

<link rel="prefetch" href="http://www.example.com/">

I read information that back in September 2010, there was a fix for Safari 5.0.1 that fixed slow/stalled page loads when DNS Prefetch directives were present. However, I couldn't any information on whether Safari on iOS supports the DNS Prefetch.

We are building some HTML 5 pages that are loaded exclusively in a UIWebView within an iOS app. On this page there are a few external resources we're loading so I'd like to improve page load times and use the DNS Prefetch if it's going to help.

Answer 1

Unfortunately can't give a satisfying complete answer, but definitely not before iOs 4.3.3 according to http://osdir.com/ml/phonegap/2011-07/msg00770.html