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mDNSResponder, discoveryd and You

I had network issues recently and I had to kill the “discoveryd” process from activity monitor to get DNS resolution working again.

I would, in the past, execute:

sudo killall mDNSResponder

There is a replacement now for Yosemite, called discoveryd. On Yosemite, you would do this instead:

sudo killall discoveryd

Just as I was about to post this I learned that Apple will revert back to mDNSResponder. It seems I’m not the only one with this problem.

I hope this helps.