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Ethernet has a self-assigned IP address and will not be able to connect...

After upgrading to 10.6.2 and upgrading EFI FW (don't know if it's related) i noticed that my ethernet stopped working. It detects the cable signal tries to negotiate IP through DHCP, the DHCP server gives the IP but the en0 doesn't use it.

I also tried manually configure the IP and also it doesn't work.

tried also with a old version of SL that i know everything was working but it doesn't work now.

tested with other routers and nothing

tested with SL DVD and nothing

any clues?

Macbook, Mac OS X (10.6.2)

Posted on Dec 17, 2009 6:19 AM

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Posted on Sep 22, 2017 8:30 AM

Thanks MHTSOSMAN,


copying the IP address [the wifi was using] has successfully restablished the powerline Ethernet connection.


I had updates installed and somehow something changed and the powerline connection through Ethernet was no longer working.


this is not the first time the ethernet connection suddenly doesn't work. But each time is a mystery getting back to work


crying the IP address manually is a simple fix and easy to remember


Oliv

136 replies
Question marked as Best reply

Sep 22, 2017 8:30 AM in response to MHTSOSMAN

Thanks MHTSOSMAN,


copying the IP address [the wifi was using] has successfully restablished the powerline Ethernet connection.


I had updates installed and somehow something changed and the powerline connection through Ethernet was no longer working.


this is not the first time the ethernet connection suddenly doesn't work. But each time is a mystery getting back to work


crying the IP address manually is a simple fix and easy to remember


Oliv

Dec 23, 2009 6:57 AM in response to dbcm

I had that problem today and my friend used the following procedure to fix it:

Go into System preferences
Then Network preferences
Click on "Advanced" button in bottom right corner
Go to "Proxies" tab
Uncheck (disable) the "Use passive FTP mode" box

This worked fine for me and internet clicked back on immediately. I have no idea what that did or why it wasn't working in the first place. But hey, it works just fine now...

Jan 9, 2010 1:12 PM in response to dbcm

I have this problem. It seems to be some kind of leak in the Ethernet driver. After using the wired connection for some time, it loses the ability to connect. It can't get a DHCP address, and assigning a fixed address doesn't help. Rebooting fixes the problem.

It is only on the wired Ethernet connection. The wireless connection works fine.
When the Ethernet NIC is in the broken state the hardware still seems to work fine, since Wireshark can use it OK.

The problem seems to be related to the number of packets transferred. It will fail in about 20 minutes of video conversation, or a few days of regular Internet use.

It started with Snow Leopard, and has not been fixed as of 10.6.2.

Feb 1, 2010 7:52 AM in response to dbcm

I also have this problem. I was able to connect using wireless on the road. But when I return home, I can't connect and the error messages is that Ethernet has a self-assigned IP address. I know it isn't a problem with my network devices because I can connect with my two other computers (one is PowerBook G4) just fine. I have also tried rebooting the laptop and the cable modem and hub. Nothing fixes the problem.

Feb 16, 2010 3:10 PM in response to dtowers1980

dtowers1980 wrote:
I had that problem today and my friend used the following procedure to fix it:

Go into System preferences
Then Network preferences
Click on "Advanced" button in bottom right corner
Go to "Proxies" tab
Uncheck (disable) the "Use passive FTP mode" box

This worked fine for me and internet clicked back on immediately. I have no idea what that did or why it wasn't working in the first place. But hey, it works just fine now...



This did not work for me.

Message was edited by: baseliner

Ethernet has a self-assigned IP address and will not be able to connect...

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