Mountain Lion Internet Sharing has no DNS

I enabled Internet Sharing on My iMac..
Connected via WiFi with my MBA.
The MBA was dynamically assgined an IP address 192.168.2.4.
But the nating for the DNS from the iMac to the MBA is non existant. I set the DNS manually to the IP of the iMac but it made no difference.
Anyone have any clue how to nat the DNS from the host to the client??
Worked perfectly in lion. Upgraded to Moutain Lion and the whole thing went to ****!!
ideas?

GR33NPYTH0N wrote:
The MBA was dynamically assgined an IP address 192.168.2.4.
On this MBA,
with the standard DHCP address allocation (I mean no manual fix to start with),
could you first validate that your Wireless network is usable?
For example, open a Terminal and run:
ping -c 100 192.168.2.1
Wich will test your connectivity with your iMac.
How many packet do you lose?

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Have you checked System Preferences/Sharing to make sure it is still selected?
Some other ideas below:
https://discussions.apple.com/message/16718231#16718231

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GR33NPYTH0N wrote:
The MBA was dynamically assgined an IP address 192.168.2.4.
On this MBA,
with the standard DHCP address allocation (I mean no manual fix to start with),
could you first validate that your Wireless network is usable?
For example, open a Terminal and run:
ping -c 100 192.168.2.1
Wich will test your connectivity with your iMac.
How many packet do you lose?

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LouieAustin wrote:
After downloading OS X Mountain Lion, my mac has become very slow and takes a bit to shut down programmes. What can i do to bring it back up to the speed it was when i had OS X Lion
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Compatibility. Sometimes, hardware peripherals and applications are not entirely compatible with a new OS release, and divert OS performance to system log entries. A symptom is a large (> 2GB) system log file at /var/log/system.log. I just discovered a bad USB hub this way. Unplug everything and evaluate your performance again. Zero [ # > /var/log/system.log] the log file if you have the permissions.
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How much memory is installed?
Here is a large list of articles related to performance issues:
https://discussions.apple.com/docs/DOC-3521
http://www.reedcorner.net/mpg/
http://support.apple.com/kb/PH10798
http://osxdaily.com/2012/10/11/mac-running-slow-reasons/
https://discussions.apple.com/thread/4542409?start=0
https://discussions.apple.com/thread/4122175?start=0
http://www.speedtest.net/index.php
https://discussions.apple.com/thread/3289614?start=0
https://discussions.apple.com/thread/3928756?start=0
http://www.whyismymacsoslow.net
http://www.slowmac.net
http://www.all-about-apple.com/slow-mac-performance-learn-how-to-solve-it/
http://www.chriswrites.com/2009/04/17-reasons-why-your-mac-is-so-unbelievably-sl ow/
http://www.macworld.com/article/1159699/troubleshooting_speed_passwords.html

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As old as your iMac is, have you cleaned out the dust? Dust buildup can lead to over heating issues. Remove any and all things plugged into it including the power cord, Remove the RAM access grille. Vacuum all openings starting with the RAM access area (air intake). Vacuum all ports and plugs, DVD slot and the opening across the top of the rear of the body. Blow compressed air through all your openings and vacuum again to remove any dust you loosend. Reinstall the RAM grille. Plug in the keyboard and mouse if not blue tooth. Insert power cord...
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http://support.apple.com/kb/HT3964
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Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
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"Try Disk Utility
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- Apps such as Little Snitch, Net Nanny, and Hands Off can prevent apps from downloading including Mountain Lion.
- Third party download managers are not compatible with the App Store.
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Mountain Lion Internet Sharing has no DNS

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