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Created February 16, 2012 12:00
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Mac OS X: restart mDNSResponder
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gistfile1.sh
Load up Terminal (Applications > Utilities > Terminal.app) and type the following.
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
To turn it back on, just do the opposite:
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
@martinburger
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For me sudo killall -HUP mDNSResponder works (http://support.apple.com/kb/ht5343).

@pavelbinar
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Thanks for sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

@slhck
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slhck commented Aug 25, 2018 

➜ sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

/System/Library/LaunchDaemons/com.apple.mDNSResponder.plist: Operation not permitted while System Integrity Protection is engaged

Does not seem to be possible with macOS when SIP is enabled.

@dushyant-basson
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@slhck yes, same here, on macOS Mojave.

@jasonnerothin
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Takes two reboots, but you can turn off sip, restore dns to sanity and then turn sip back on: Instructions here: https://www.imore.com/how-turn-system-integrity-protection-macos

@pupitmiser
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Stop:
sudo killall -STOP mDNSResponder

Start:
sudo killall -CONT mDNSResponder

@zakkg3
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zakkg3 commented Mar 10, 2023 •
edited
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sudo killall -HUP mDNSResponder

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