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Created October 25, 2012 15:56
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How do you use a different DNS entry per domain name in OS X?

Use /etc/resolver. For instance, to change the DNS servers for irc.freenode.net, create the file

/etc/resolver/irc.freenode.net

And set its contents to

nameserver 8.8.8.8
nameserver 8.8.4.4
["dns","opendns","freenode","irc","blocked","google","chat"]
http://blog.philippklaus.de/2010/11/custom-dns-entries-per-domain-nice-feature-for-vpn-setups/
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