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Fix a DNS resolution failure
Authored by: Chealion on Dec 21, '09 10:12:12AM
For what it's worth. Directory Services is not in charge of DNS any longer in Snow Leopard. Just Leopard. mDNSResponder took over the heavy lifting of DNS used by most of the system. There's a feature in Snow Leopard that will rearrange the order DNS servers are queried in order to try and speed up DNS requests and avoid the timeout of a DNS request (thereby making the computer look slow). There are a handful of threads on Apple's Discussions Groups and sites like Super User or Server Fault detailing more. Suffice to say,
sudo killall -HUP mDNSResponder
will clear the DNS cache and reset DNS. At my workplace, the removing external DNS servers from being broadcast via DHCP was the only fix (and a non-issue to implement)
Chealion - The one and only! =)
Edited on Dec 21, '09 10:18:51AM by Chealion

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