Monday, November 3, 2008

A fix for slow DNS lookups on OS X

I've been experiencing pretty painful internet access, especially to Google services. After some investigation, it looks like the DNS lookups are pretty darn slow, but once an address is obtained, my bandwidth is nice and speedy like it should be. Apparently I'm not the only one.

(Oh, and yes I verified that I don't have the DNS trojan horse that inserts malicious DNS servers in your network settings.)

Apparently one of the latest updates to 10.5 included some changes to request both IPv4 and IPv6 addresses (all part of moving to IPv6). My guess is that Charter.com's DNS servers don't handle these well, and this is causing a delay. Per Kai, I tried the OpenDNS DNS servers on my wireless router, and network requests seems to be way-fast again. Woo-hoo!

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