Self Assigned IP - Again

Comcast, into a Motorola SBC5220, wired to 500 gig Time Capsule &.3.2).
MacBook very frequently sets - not connected - self assigned.
Sometimes it occurs when using wireless; sometimes it occurs when using wired ethernet.
I've searched these forums, macosxhints, tech support guy and many others. It seems that this is a persistent, difficult problem. Difficult because there is not one solution; in fact the typical solution consists of several step which if done in a different order may also work, and might also not work even if done identically. In fact I don't think that of the 25 or more threads I've read that there are even two identical solutions.
Currently the MacBook s connected wirelessly but cannot connect with an ethernet cable. Also, A MacBook Pro that I am using has both a valid airport (10.0.1.199) and an ethernet (10.0.1.182 IP address.
I've tried a lot:
Airport off and on
Firewall on and off
New location, new network services
Reset pram
Change wireless security
Take out the battery
Delete plists, delete keychains
And yes, I've powered down everything and restarted; and the cable is good.
Any idea of what is going on and how to solve it, and how to avoid it.
Thank you.

Just to keep this one up the table a bit!
Same issue, tried it all, wireless connection and now ethernet no longer working on my iBook G4. Seems to have got worse each time I have found a solution, so frustrating!
Surely there must be a proper solution/known cause for this rather than the 'confuse it into connecting approach' we have now!
S.

Similar Messages

Self-assigned or Manually Assigned IP Doesn't Work.

I've got a network of four Macs in my house, using a wireless router from Verizon. This network has been working fine for at least a year. For the last week, though, my MBP can't access the internet or see other computers. My router recognizes the MBP and the MBP shows full bars for the wireless signal, but other than that, nada. This is true whether it's a self-assigned IP or I manually create the IP (using the IP address that the router recognizes as the MBP).
The MBP hasn't left the house. The entire network set up has not changed.
I have tried:
- Manually setting the IP - worked briefly last night, but now doesn't work again.
- Resetting nvram - didn't work at all
- Power cycling computers and router in all possible permutations
- I may have tried other things that I'm not thinking of now
Any fixes or info on why this kind of thing happens would be greatly appreciated.

cmoorhead wrote:
For the last week, though, my MBP can't access the internet or see other computers.
You might try resetting your connection settings using the steps listed in this message:
http://discussions.apple.com/thread.jspa?messageID=10695921&start=1
They're not guaranteed to solve the problem, but they'll only take you a minute or so to try.

Self assigned ip and can't connect wirelessly on any apple device

Man oh man... this issue has been festering for almost an entire year now and I have not found a solution. Last August (2009) my macbook stopped wirelessly connecting to my ATT 2WIRE dsl modem saying it had a self assigned ip address. I bought the computer in July and could connect with no issues for about a month. Ever since then, I've been connected via ethernet with slow connection. At the same time, the 2 iPhones in our household also could not connect wirelessly. One G5 could connect wirelessly but was extremely weak and often dropped the signal.
I did tons of research and found zillions of other people with this issue and no resolution. I've tried every solution on macrumors, and apple discussions with no results... I've disabled firewall, renewed DHCP, tried DHCP manual (which then changes the status to say I'm connected, but nothing works in my browser), restarted, etc. At work, I can connect to our Linksys router wirelessly with no issues. When my friends come over, their macbooks and iPhones don't work either!
Originally I thought the issue was my modem so I ordered another one. Same issue. Just this week I was at my wits end and cancelled my service with ATT and switched to Clear. I acquired a Linksys router to connect to the Clear Modem and I'm STILL having this issue. The difference is now that my iPhone can connect wirelessly but my macbook still cannot. The router is a Linksys WRT51ab. My macbook pro is on version 10.5.8. I can only assume that some kind of update to airport is causing the problem. As of now, my IPv4 address is: 169.254.111.225
Please someone help me! I promise some kind of reward if you can help me fix this.

Based on the model number, your Linksys router is OLD.
I'd actually suspect that your router has been the problem.
You can download the full user manual here --> http://homedownloads.cisco.com/downloads/wrt51ab_ug.pdf
I don't know if you ever secured your wireless router or renamed it from the factory defaults.
If it your Linksys wireless router is not password secured, it's possible that someone else changed settings about the time things stopped connecting.
Regardless, you can completely reset the Linksys to the factory defaults by holding down the Reset button on the Linksys for more than 10 seconds.
Do that first.
Then see if things 'magically' start connecting again. I'm guessing the phones will connect, but the Mac still won't, because of the IP address in the current configuration.
If not, here's how to configure your Mac network settings.
On your Mac, in System Preferences, Internet and Network, Network,
Click on Location, Edit Location
Click the + sign to create a new location called '_test'
(The underscore before the name will put it at the top of your Locations list where it's easy to find)
Select Ethernet (wired)
First, we'll let DHCP try to set the address.
Click Apply.
Move the selection back to Ethernet, and watch the Status.
If it shows Connected and IP address appears after a few moments, at least the WIRED configuration is working.
Now IF the Wired configuration works, lets move on to the wireless configuration...
(If the Wired configuration is still not working, post back and we'll work through it.)
Still in System Preferences, Internet and Network, Network, with the _test location you just created...
Select the AirPort interface in the left column.
Turn AirPort On.
If no Network Name appears, click on the up/down button and select Join Other Network and select your Linksys router name.
Click 'Apply'.
Leave DHCP settings alone and watch the Status to see if it connects.
Let me know what happens!

Lost wireless and repeated self assigned IP address

After I updated to OSX 10.5.6 my powerbook started dropping my wireless/internet connection, and adopted a self-assigned IP address. This happened whether I connected to the router via wireless or cable.
I was eventually able to change the system configuration files as suggested in previous posts, and reset my PRMU. This has worked for a wee while, but sometimes on starting up my laptop, the machine self assigns again.
I know the internet is available as I can access it from my iphone.
Then 20min ago, whilst surfing, the internet went down AGAIN, and self-assigned its favourite IP address.
I recently updated to 10.5.7, but the problem remains.
Is this a new problem or has it been going on for a while?
Also, is it a hardware or a software problem?
Any ideas?
Charlie

If you are able to connect initially and then it drops out I would look towards possible sources of interference. While most modern devices avoid this issue fairly well, it is a possibility. Devices such as cordless phones used to cause problems.
If it is dropping out while you are physically connected, I would perhaps check the settings on your router. Most models have a reset function which will allow you to reset it to factory defaults. Then you could reconfigure it and see if the problem persists.
The other possibility is that there is a software service on your macbook that is starting up and causing the network loss. If possible, I would attempt to initialize and reinstall all the software on your macbook. Note that this will wipe everything off, so make sure you make appropriate backups before reinstalling from scratch.
Once you have reinstalled the OS, you can upgrade it to the most recent version and see if the problem persists before installing any other software that may interfere with it.
You really need to go through a process of elimination to find out whether the problem lies with the macbook or the router. However considering your iphone works fine, I would look towards the macbook first.

MacBook Pro can't actually connect to Wi-Fi with Self-Assigned IP

Hi there
I have a 15 inch MacBook Pro and it can connect to Wi-Fi but have no actual data coming in. And it says self-assigned IP.
This only happens to my home Wi-Fi, however, I can connect and use Wi-fi at school or anywhere else perfectly. In the mean time, my Android phone and my flatmates' Windows have no problem using the Wi-Fi. The problem has been going on and off for a month, sometimes it works again and sometimes it goes wrong like this again.
During this time I mostly use my other MacBook Pro 13 inch Retina. Until today, this problem happens on my 13 Retina mac for the first time, and the 15 Pro again as well. A few days ago, my 15 Pro started working again, and today they just gone wrong together at the same time.
I just found out that my 15 pro can still work if connected to ethernet, but I can't just work in the living room, where the router is. And as you know Retina doesn't support Ethernet.
I've check on the Internet and found many people have the same problem as I do. I also tried lots of ways to fix it with the information I found online. And nothing works. I even suspect that it's actually my flatmate blocks me out with some setting on the router (Is it possible?)
Anyways, can someone please help me fix it thoroughly... Please and thanks.

Each country regulates wireless networking differently. Wi-Fi devices are restricted to certain frequencies and power levels. The client devices try to find out where they are and configure themselves accordingly. Since a wireless access point (WAP) usually does not move across national boundaries, the Wi-Fi regulatory domain (country code) is set by querying the first one to respond when the client initializes itself. You don't have any direct control over it on the client. If your device is picking up the wrong country code, and is therefore locked out of using some Wi-Fi channels or operating at full power, the only lasting solution is to fix or remove the misconfigured WAP.
To find out which WAP's are broadcasting a wrong country code, do as follows.
Triple-click anywhere in the line below on this page to select it:
/S*/*/P*/*/*/*/*/airport -s | open -ef
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing command-V.
The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign ($) to appear.
A TextEdit window will open with the output of the command. The first line should look like this:
SSID BSSID RSSI CHANNEL HT CC SECURITY (auth/unicast/group)
Each line below that one represents a WAP within range. Compare the two-letter code in the column headed "CC" with the ISO code for your country. The code "X0" means that the country couldn't be determined. If a WAP with a wrong code is not under your control, try restarting the computer as close as possible to your own router.

What to do if you can't access a wifi network and showing you message that your airport has a self-assigned IP and cannot be connected to the internet?

Hi,
i am currently using 10.6.8 snow leopard
i usually access internet through my broadband modem and wifi at home.
i've been using our home wifi network for almost 1 week now (since it's new) and almost everyone at home use it as well.
and im using my broadband everytime i go out.
this last week, i went to a vacation and i use the wifi connection of the hotel where i stay in.
my connection works fine and so i don't use my broadband anymore.
then i got home..
when i got home.. i tried to connect to our home wifi network again .
like what im doing before, im clicking the airport icon on the top of my desktop,
and since my airport is always on, the next step that im doing is to click the preferred network that i want to join and put the password on it.
this is perfectly working in my macbook before i left.
but now , it's not working to my laptop anymore! i can't connect to it!
after putting the password and hitting the enter, the airport icon at the top will run, however after seconds it showing gray color with exclamation point on it!
the alert is showing : No internet connection
but the network i joined is still checked and showing full signal !
i tried checking my Network under system preferrence and the airport tab in the left corner is showing me a message that
my airport has the self-assigned IP address 169.***.****.** and will not be able to connect to internet!
i don't know what happen and i dont understand why is this happening since everyone at home can still use and access our home wifi !!
it's the same network that i'm trying to connect to anyway!
i tried using my broadband instead to connect online and it works fine!
but everytime i try to connect using wifi at home , again i cant connect!
anyone can tell me what's going on?
i haven't try joining other network anyway! but i'm planning to do so..
can some one help me please??
showing me a message that
my airport has the self-assigned IP address 169.***.****.** and will not be able to connect to internet!

and now, when i tried to check again my network preference below the airport tab is showing a message that
"my airport does not have an IP address and cannot connect to the internet!"
then after seconds it will goes back to the first message that
"airport has the self assigned IP address etc....."
i don't know whats going on now!
airport tab is not showing green color anyway! i'ts always in yellow!
i tried turning it on and off but nothing happen! HEEELLLLPP!!!!

"self-assigned' IP address.

Firstly to be semantic. Part of my frustration at this problem is the fact that Apple call this a "self-assigned" IP address. In no way have I assigned this IP address myself. My Macbook Pro assigned it for me.
I have had this problem intermittently since I bought my Macbook Pro years ago. The first time I found a solution by renewing my DHCP lease and sometimes that would work, sometimes not.
Second fix is a reboot, third fix is to make airport inactive and then re activate it again, fourth fix is to add new location from system preferences and then start from fix number one again
I have also tried various commands suggested for terminal and tried deleting folders that have been suggested as the cause.
But now returning from a trip overseas I get the "self [apple] - assigned IP address" message and none of the fixes that I have wasted my time applying in the past are working.
It's almost comical because just a week ago I was saying to somone how I was thinking of moving to PC as I had had enough of trying to fix problems with my Mac.
Hours of trawling the internet for a simple walk through of the problem suggests anything beyond what I have already tried. I can't believe I have put up with this issue for so many years, just accepting that it's a small problem that occaisionally interupts the massive benefits of using a Mac.
So if anyone has a final suggestion of where to go to fix the problem [on line] I would be so releived of my frustrations. If not then I am heading out to buy a PC tomorrow and I will take great pleasure in destroying my Macbook Pro.

I have a little Macbook that connects to my wifi connection automatically without any problems and always has.
I have a much more expensive, much more powerful 2010 Mac Pro Quad Core which is totally incapable of jumping on to the same Wifi Connection. Even if both devices are right next to one another.
Of course, I have the usual 'Self Assigned IP' problem, and like you, I have trawled the internet endlessly following all sorts of guides, all sorts of DHCP Renewal methods and all sorts of manual methods and all sorts of Firewall settings etc etc etc.
In the end up, none of it ever works. Except for the very rare occasionally day I'll turn the Mac Pro on and it will have randomly decided to connect to the WIFI connection and work fine.
I gave up trying to figure it out. I can no longer connect to the internet so my Mac Pro has to live with no important updates etc. Not very future proof at all and extremely frustrating.
I run a busy recording studio so its solely the fault of this problem that I struggle to be as competitive as my rival studios as I can not preform the simple Audio software updates everyone else can. Brilliant.
INFURIATING.

Self-assigned IP address which is not able to connect to the internet.

Okay, so my whole issue started around six or more months ago. I have a white MacBook which I have never particularly had any connectivity problems with, at least that where caused by my laptop. I constantly am on the internet at home and have never had issues with wireless connection here. I am a full time student which means I am also constantly on campus with my laptop and needing access to the internet. Even so, there I have never had any issues with connectivity.
My issue is when I go to another university campus I am unable to connect to the internet. My airport finds the network I want and connects to it but usually within a few seconds the radial bars go a light gray and have an exclamation point through them . When looking under the Airport drop down list it simply says, "Airport has a self-assigned IP address and may not be able to connect to the internet." This particular IP that is not allowing me to access the internet starts off with 169.**.*.**. I would provide the entire IP but as I am not on that campus at the moment, I can't and don't remember it fully.
I have tried SO many different things in order to find a solution but have come up empty handed every time. I've tried turning off my firewall and all of the steps that resolution includes and have also tried to resolve the issue through the creation of a new location, new network, and the use of network assistant on Airport.
I know it is not an issue of the universities wireless network because I can easily connect to the internet through my Ipod Touch without a password simply by finding the network, connecting, stating I'm a guest, and then agreeing to the terms of use. Same goes for my local campus wireless network on both my Ipod Touch and MacBook.
I am in extreme need of a resolution and would GREATLY appreciate any kind of feedback anyone can give me. If there is any other information you may need to help me out a little more accurately just let me know, I'll be happy to give you whatever I can so that I may figure this annoyance out!

By the way, totally didn't mean to categorize this under Airport for Windows. This is my first post and OBVIOUSLY a figured out a way to mess it up. My bad. :S
But again I'd appreciate any help! :]

Self-assigned IP address, try to connect to pc

I do a lot of file transferring from my mac to another pc laptop, so I've got them hooked together with an ethernet cable. I had this issue in the past, where I'd try to connect but my network settings kept saying the "ethernet has a self-assigned IP address and will not be able to connect". The solution I found to fixing this was to open up the Advanced Settings, and change the IPv6 configuration to "Link-local only" and then everything would work perfectly.
I upgraded to Yosemite yesterday, however, and now that solution no longer works. Still getting self-assigned IP. How can I fix this??

I checked my sharing options, and everything looks to be on. I also have the yellow circle, but I can never get a connection unless it goes green. Before I upgraded, that was the issue before; it would be yellow until I changed the IPv6 connection to "link-local only" and then the ethernet connection would change to green, and I'd have no issues. Now, when I change it to "Link-local only" and hit apply, nothing happens, it's still yellow.
I tried to connect to the server just to see, and it won't connect. I get an error that says "There was a problem connecting to the server "AMANDA-PC" Check the server name or IP address, and then try again. If you continue to have problems, contact your system administrator."

Can't connect to internet..self assigned ip address problem with DSL Modem

I've run into this before, without resolution, and now again on a friend's iMac. Time to ask around...
Basically, everything appears to be assigned and configured perfectly, but the network status always shows, "...you have a self assigned IP address and may not be able to connect to the internet". Sure can't connect to the net when it says that.
I've gone thru the procedure advise before that details the sequence of events needed to insure the modem resets and recognizes the Mac and it's incoming DSL (sbcglobal) signal. The order of network priority is set properly by dragging built in ethernet to the top of the list. Modem was powered down, plugged in, and then connected to the Mac, but no solution. Any ideas? thanks

This continues to be a mystery. I've had my powerbook on several networks, and connection has, most of the time, been an automatic process. Additionally, I've installed new systems for people with the same isp, and all has been well. So easy is the process, it's never been an issue. However, following explicit procedural instructions (including powering the Mac down), has proven unsuccessful on 2 different occasions.
There is little help with the isp support in India, which is where the call routes too.
The only thing I have not done is to swap out the cable at one of the locations, but the other location, which has the same issue, works fine on the iMac there. Only when I connect my Powerbook to the modem, does the "...self assigned ip address...not be able to connect to the internet" appear.
I just keep thinking there has got to be a small detail that is being overlooked.

All of a sudden I started getting "Self-assigned IP address ... Can't connect to internet" message when I attempt to connect to wi-fi at home. I tried solutions posted on the net but to no avail.

It once worked when I removed it from Network preferences and attempted a relogin - but the problem resurfaced again and is not going away. I tried the "key chain access" solution - but my Wi-Fi doesn't show up in "Sytems" at all. Any help will be appreciated. It's OS 10.6.9 MacBook Air.

The wifi icon shows no connection with the network -- the "!" mark.
However the computer sees the network, i.e. when I search in Network Preferences the network is listed.
So: 1) the computer sees the network but 2) will not connect to the network. The reason given for refusal to connect is "self-assigned IP address".
Not to be repetitive but two other Mac laptops are connected to the same network and working perfectly. The network preferences, as shown in the "advanced" section, are the same for all machines, i.e. DHCP is selected and IPv6 is Automatic.

Self assigned IP address problem?

There are times when my Mac Pro (Lion) won't connect to my home internet and comes up with a message about a self assigned IP address. I have no idea how to solve this. At the moment I just have to keep trying to connect and sometimes hours later or the next day it will. Its very frustrating! Does anyone know what I can do / what the issue is please.

Hold down the option key and select the Wi-Fi menu in the menu bar. What values are shown for the following?
PHY Mode
Channel
Security
Signal/Noise or RSSI
Transmit Rate
Please do not post the BSSID, as that information is private.
Now hold down the option key again and select
 ▹ System Information... ▹ Network ▹ Wi-Fi
Compare the two-letter Country Code with the ISO code for your country. Does it match? The code X0 means that the country couldn't be determined. The code X3 means South America, not otherwise specified.

Self assigned ip address-Could someone help me?

There are two Powerbooks in my house which connects wirelessly to the internet and an airport express that joins the existing wireless connection.
When I'am using mine, I can connect without any problem, but when my girlfriend uses her mac we both get the self-assigned ip address. The only way to connect after that is by reseting the router.
This is what i did in both computers after I read some posts here (BUT THE PROBLEM CONTINUES) and I don't know what else to do:
"....1. Reset Open Firmware. As you turn on the machine, press & hold CmdOption+OF until you get a screen that says "Welcome to Open Firmware". At the prompt, enter "reset-nvram" (without the quotes). Press return. Enter "reset-all". Press return and the machine will restart.
2. Open network preferences. In airport, go to advanced. Check the box that says disconnect the wireless network when logging out. (It seems incredible that it would work, but apparently it sometimes does.)
3. Restart in "Safe" mode (hold down "Shift" while restarting). Once in Safe mode simply restart again in regular mode. http://docs.info.apple.com/article.html?artnum=306879
4. Go into your keychain and find the password key for your network. If you connect to a WAP it will be the name of that WAP. Then in the key click on the access control tab. It probably shows selected applications. Change this to "Allow all applications to access this item"........"
Thanks.
K.

My wife's PB G4 was doing the same thing. Worked fine at the Apple Store but had issues on my all Apple network at home. After resetting the routers, recreating the network etc I finally disabled the firewall and all seems to be working.

Self-assigned IP address problems

I'm having a problem with my wireless router connection (my Airport card shows the network, but the "fan" is greyed out, and if I choose the network it still doesn't connect - When I check network status I get "AirPort connected to network, but has self-assigned IP address and may not be able to connect...)
I can temporarily fix the problem by going into System Preferences to Network to Airport to Preferred Networks to Assist Me and THEN it will go to my network and turn on the path.
I'm running Tiger 10.4.11 on a G5 iMac with the original AirPort Extreme card, and routing through a Linksys WRT54G attached to a cable modem.
There are a lot of networks in my area, according to my wireless "fan".
If changing channels on my router might fix this, I'd like to give it a try, but I don't know how, AND I don't want to ruin the signal to the other computers in the house, which, by the way, work just fine when the iMac loses the signal.
If there's another way to tell the router to ignore the self-assigned IP address, or to get the AirPort to stop providing this ...
The problem is obviously the self-assigned IP address. The question is what is causing this?
Is it the AirPort Extreme Card?
Is it the Linksys Wireless router?
How do I test to see which it is, without losing the signal from the router to the other computers in the house?
With so many people having the same problem, there must be an answer somewhere.
Can some kind soul please point out the correct path? My tech support (teenager) will be home from college this week, and if I can prove to him that it won't ruin everything I think he'll be up to the challenge.

Hi,
Thank you Linc & dwb, I've had no issues with the router in the 14 months its been installed. But tonight I've turned off the NAS and since then no drop off for wifi/ or assigning itself an IP address.
I will switch on the NAS once again and see what happens, would it be best to assign a static IP to the NAS? One thing I have found when checking the homehub connection details, the mac air connects at the 5Gz Wireless as does the Kindle, which has also suffered from losing the wifi connection, where as my macbook pro only connects at 2.4Gz and like I said has not had any issue. Not sure if this anything to do with the problem or not?
All I do know is that since the NAS was introduced then the problems began, so again not sure if its the NAS impacting on the router or a router setting?
thanks

Self Assigned IP? Can't connect~!

Self-Assigned IP? Cannot connect to the internet. I see the router/network name, I have good connection, but no IP? It assigns a 169.xxx.xx.xxx
-I have repaired permissions
-Deleted AirPort from the network list and re-added it
-Deleted plists
-Turned off the router and laptop, waited, turned back on
-Renew DCHP lease
Is there an order I can do things in or some other step? For some reason, it just STOPPED WORKING out of the blue today, and I have been trying to fix it for hours to no avail...
Router: Seimens Gigaset SE567
Mac OS 10.6.7
MacBook Intel Core2 Duo 2 GHz
AirPort Extreme Card

It might help to reset the connection settings on your Mac using these steps one at a time until the problem is resolved, recognizing that, depending on your problem, not all of these steps will make sense:
1) Use the AirPort menu bar item to turn AirPort off, then on again.
2) Try to select your Wi-Fi network from the AirPort menu.
3) In the Network panel of System Preferences delete the AirPort item from the left column, then add it back.
4) In the same panel as (3), define a new location and see if you can make that work.
5) In the same panel, select the AirPort connection item, click the "Advanced" button, select the "TCP/IP" tab, then click "Renew DHCP Lease".
6) In the folder /Library/Preferences ( _not_ <yourhomefolder>/Library/Preferences), move the folder SystemConfiguration onto the Desktop, then restart your computer. See if you can now make your AirPort connection work.
These steps may not help, but they'll only take a couple of minutes to try. Before you try these, if you have any special network settings on your Mac for things like DSL credentials, note all your network settings, because the latter steps will destroy them. If you got all the way to the last step, if things don't work any worse than before, you can trash the saved SystemConfiguration folder.

Self Assigned IP - Again

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