DNS problem, but Wifi works fine.

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DNS problem, but Wifi works fine.

Hey guys !

So here's what is happening. I basically have a modem (without Wifi), and when I try to go on the internet with it I have a DNS problem (that's what Chromes says anyway). First thing I tried doing was to check if I could go online by using an other way: Safari didn't work, and no better luck with Firefox.

Then I tried going online using Wifi (not the same modem) and it worked fine.

So I tried the modem on another Macbook, to see if it's my computer, or the modem, and, well... my friend was able to go online. Really don't know what to do...

MacBook Pro, iOS 6.0.1

Posted on Dec 12, 2012 10:08 AM

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Answer 1

Dec 12, 2012 10:19 AM in response to Mapokew

Which DNS's are you using?

Try OpenDNS

208.67.222.222

208.67.220.220

...or Google's.

Clinton

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Answer 2

Mapokew Author

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Dec 12, 2012 10:22 AM in response to clintonfrombirmingham

What do you mean ? I didn't add any DNS. It's Chrome that actually tells me that I've got a DNS servers error...

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Answer 3

Dec 12, 2012 10:27 AM in response to Mapokew

Go to System Preferences>Network>Advanced and add either the OpenDNS server addresses (listed above) or the Google ones (in the link). It seems that's where you're having problems.

Clinton

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Answer 4

Mapokew Author

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Dec 12, 2012 10:33 AM in response to clintonfrombirmingham

Just did that, and didn't change anything... Tried the google DNS and the OpenDNS server. This is killing me honeslty. I know it's something from my computer... but I didn't change anything.

The error chrome gives me is:

Error 105 (net::ERR_NAME_NOT_RESOLVED): Unable to resolve the server's DNS address.

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Answer 5

Dec 12, 2012 10:36 AM in response to Mapokew

Have you tried resetting your modem?

Clinton

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Answer 6

Mapokew Author

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Dec 12, 2012 10:37 AM in response to clintonfrombirmingham

Well.. if it works on another computer, does the issue really come from the modem?

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Answer 7

Dec 12, 2012 10:40 AM in response to Mapokew

It shouldn't - but that's the last thing that I can think you could try (and make sure that you continue to use the same OpenDNS servers).

Clinton

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Answer 8

Linc Davis

Level 10

209,535 points

Dec 12, 2012 11:41 AM in response to Mapokew

When connected to the modem, select  ▹ System Preferences ▹ Network ▹ Advanced ▹ DNS. Under DNS Servers you should have one or more numerical addresses, such as “192.168.1.1” or “10.0.0.1”. What are those addresses?

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Answer 9

Mapokew Author

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Dec 12, 2012 12:07 PM in response to Linc Davis

Well.. there weren't any, but now there are the ones i've added: 8.8.8.8 and 8.8.4.4

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Answer 10

Linc Davis

Level 10

209,535 points

Dec 12, 2012 12:21 PM in response to Mapokew

And did that make any difference, after you clicked OK and then Apply?

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Answer 11

Mapokew Author

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Dec 12, 2012 12:40 PM in response to Linc Davis

No difference at all...

I even started thinking that it might be a physical problem (as the modem works fine on another mac). No luck there too, I connected my mac to another one using the ethernet port, and it worked fine.

I really don't know what to do...

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Answer 12

Linc Davis

Level 10

209,535 points

Dec 12, 2012 12:46 PM in response to Mapokew

Select  ▹ System Preferences ▹ Network ▹ Advanced ▹ TCP/IP. What values are shown for the following:

Configure IPv4

IPv4 Address

Subnet Mask

Router

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Answer 13

Mapokew Author

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Dec 12, 2012 12:57 PM in response to Linc Davis

Configure IPv4: Using DHCP
Ipv4 Address: 169.254.58.67

Subnet Mask: 255.255.0.0

Route: (blank, nothing is written)

And, when I click on "Renew DHCP Lease", well, nothing changes...

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Answer 14

Linc Davis

Level 10

209,535 points

Dec 12, 2012 1:11 PM in response to Mapokew

Make sure Ethernet is at the top of the connection list in the Network preference pane. The dot next to it should be green; otherwise, you're not physically connected to anything. Turn off Wi-Fi.

Disconnect the power cable to the router, wait a few seconds, then reconnect it. Wait for the router to resynchronize. Try again to renew the DHCP lease.

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Answer 15

Mapokew Author

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Dec 12, 2012 1:38 PM in response to Linc Davis

Did everything you did, nothing...

I then restarted my computer. Now, the Ethernet is orange: "No IP address". Status: Unknown State, the status of your network connection cannot be determined".

Grawwwww !

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