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Mike, Mac Medic
Category: Mac
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Experience:  Over 20 years IT experience with Apple computers in publishing, marketing and design.
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How do I fix this error message from the Airport utility This

Customer Question

Error message from Airport utility: "This Apple wi-fi base station doesn't have DNS server addresses and may not connect to Internet." Time Machine is connected directly to modem and will connect only MacBook Pro to the Internet.
Submitted: 5 years ago.
Category: Mac
Expert:  iteachmac replied 5 years ago.
Welcome ,I will give a full and clear answer to your question, please make sure to reply to any questions I have. They may be essential to my reply.

Hi , lets try a few settings .

Before configuring or adjusting specific settings, perform the following steps:
Ensure that your Wi–Fi router's firmware is up to date.
This guide to update your apple router is required .

If you are using a wireless network with airport you may want to check your Wifi channel is not clashing with other nearby network/s , details below .

Extra wireless setup info :-

Things to do before/during setting up your router :

Find a clear channel :

Try to pick a channel no one else is using next door , this tool can help find a clear unused channel . .
WiFi Scanner v1.1 **use this to check your wifi on the mac is working too :)

Once installed , look inside your Applications folder to see the app , Wifi scanner .

Launch it , and find out if there's any other networks in your area , and what channel their on , you don't want to be on the same channel so set your router to another channel in the mid range , channel 5 , 6 , 7 or 8 depending on other wifi networks close to you etc .

Normally you can get in to the router Airport setup via Airport utility .

Mac HD / Applications / Utilities folder , Airport utility .

From here you can normally configure the Airport router and setup a SSID and password for wireless use , you want to change your Wifi wireless channel as found above to a clear channel , preferably at least 1 gap in channels from any other networks nearby ..

If your Wifi channel is set to 7 and a other local wifi network is set to 8 set yours to 6 , if a nearby net work is set as the same channel as yours 7 & 7 for example set yours to either 5 or 9 and so on for best results.

If you have Wireless phones at your location including mobile phones and home phones , relocate away from the router or computer as signals can affect wireless reliability. Or switch off to test if there is an affecting issue .

Normally the affect would be worse during calls if any are made . .

You can set the dns setting in the router also please do so .

Enter the DNS info below:-

More DNS info here :-

for devices :

See DNS settings for your Wireless network and devices there are way to do this on each device , router , macs network control panel , iOS settings for Wifi on iphone and itouch , ipad etc. .

Mac Osx
See DNS control panel Tab in the Apple menu , System preferences, Network control panel , DNS tab. .

For iPad , iPhone , iTouch .. please go to the Settings app , Choose Wifi , Choose the SSID your router then hit > See DNS settings , fill in the DNS info as below .

Enter the DNS info below for your DNS setup :-

Does this help?