Disable Bonjour by Turning Off mDNSResponder

How to Turn Off mDNSResponder by Disabling Bonjour in OS X

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

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

 

How to Turn On mDNSResponder by Disabling Bonjour in OS X

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

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponderHelper.plist

 

You could test to see if the services are running using ps:

sudo launchctl list | grep mDNS