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Internet problems
Apr 9 2011, 4:00 am
By: poison_us
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Apr 9 2011, 4:00 am poison_us Post #1

Back* from the grave

Alright, my home internet seems to have a small problem. It's on a wired network, and it's the only computer using the router at a time. The internet works perfect for about 8-10 minutes, and then suddenly the internet dies. During this, I've noticed that the network goes from "Network" to "Unidentified Network". Rollbacks and updates both provide nothing more than false hope. My current method of fixing is unplugging the ethernet cable and plugging it back in after about 2-3 seconds. Anyone have any idea what might be causing this BS?




Apr 9 2011, 4:10 am Lanthanide Post #2



I really wish people would state their OS in these things. I'm guessing it's Vista/W7.

I don't know what "Unidentified Network" precisely means. It's likely there are multiple different faults that can result in the same error message. In any event, some more information will be helpful.

When this issue happens, are the link lights on your ethernet port on? One should be solidly green, and the other flashes green (or potentially orange) when it receives traffic. If these lights are off, it would indicate a hardware or signalling problem (Layer 1-2). The problem could be either your PC or your router. I would suggest upgrading network drivers, and installing new firmware for your router if available.

Another thing to check when the network goes down like this, is to go into command prompt and type "ipconfig /all", then post the results here.

Do you have wireless anywhere in the network? I know that your computer is connected via wire, but if there is also a wireless access point elsewhere that maybe other people use (eg laptops) that is something worth stating.



None.

Apr 9 2011, 4:28 am SiberianTiger Post #3



Something may be wrong with your internet line, so you might want to complain to your cable company.

Is your computer connected to a router or a directly to the modem? Modem connects to the router, then router disseminates the connections.

You might want to try connecting directly to the modem instead.

If neither of the two I've mentioned is a problem, then there must be something wrong with your computer. Try connecting with someone else's computer.



None.

Apr 9 2011, 4:52 am poison_us Post #4

Back* from the grave

Quote from Lanthanide
Another thing to check when the network goes down like this, is to go into command prompt and type "ipconfig /all", then post the results here.

Do you have wireless anywhere in the network? I know that your computer is connected via wire, but if there is also a wireless access point elsewhere that maybe other people use (eg laptops) that is something worth stating.
Win7, and the lights on the router stay lit while the light around my ethernet port on my laptop goes out. Will do the ipconfig deal, and no, no wireless at all.

EDIT:
Ignore the wifi adapter ;o

Windows IP Configuration

Host Name . . . . . . . . . . . . : poison-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cinci.rr.com

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ZoomTown.com
Description . . . . . . . . . . . : Realtek RTL8191SE 802.11b/g/n WiFi Adapter
Physical Address. . . . . . . . . : 70-F1-A1-C3-E2-29
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : cinci.rr.com
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : C8-0A-A9-CA-D1-0B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::21e4:ab9a:fcfa:ab6c%11(Preferred)
IPv4 Address. . . . . . . . . . . : 69.133.26.47(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Lease Obtained. . . . . . . . . . : Friday, April 08, 2011 11:34:19 PM
Lease Expires . . . . . . . . . . : Saturday, April 09, 2011 10:39:59 AM
Default Gateway . . . . . . . . . :
DHCP Server . . . . . . . . . . . : 10.254.128.1
DHCPv6 IAID . . . . . . . . . . . : 234890910
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-8A-9E-2E-C8-0A-A9-CA-D1-0B

DNS Servers . . . . . . . . . . . : 216.146.35.35
216.146.36.36
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.cinci.rr.com:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : cinci.rr.com
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.ZoomTown.com:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Connection-specific DNS Suffix . : cinci.rr.com
Description . . . . . . . . . . . : Microsoft 6to4 Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2002:4585:1a2f::4585:1a2f(Preferred)
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : 216.146.35.35
216.146.36.36
NetBIOS over Tcpip. . . . . . . . : Disabled


EDIT2: Just for comparison, when I have internet:

Windows IP Configuration

Host Name . . . . . . . . . . . . : poison-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cinci.rr.com

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ZoomTown.com
Description . . . . . . . . . . . : Realtek RTL8191SE 802.11b/g/n WiFi Adapter
Physical Address. . . . . . . . . : 70-F1-A1-C3-E2-29
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : cinci.rr.com
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : C8-0A-A9-CA-D1-0B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::21e4:ab9a:fcfa:ab6c%11(Preferred)
IPv4 Address. . . . . . . . . . . : 69.133.26.47(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Lease Obtained. . . . . . . . . . : Friday, April 08, 2011 11:34:19 PM
Lease Expires . . . . . . . . . . : Saturday, April 09, 2011 10:39:59 AM
Default Gateway . . . . . . . . . : 69.133.24.1
DHCP Server . . . . . . . . . . . : 10.254.128.1
DHCPv6 IAID . . . . . . . . . . . : 234890910
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-8A-9E-2E-C8-0A-A9-CA-D1-0B

DNS Servers . . . . . . . . . . . : 216.146.35.35
216.146.36.36
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.cinci.rr.com:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : cinci.rr.com
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.ZoomTown.com:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:3472:2c62:ba7a:e5d0(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::3472:2c62:ba7a:e5d0%13(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 9:

Connection-specific DNS Suffix . : cinci.rr.com
Description . . . . . . . . . . . : Microsoft 6to4 Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2002:4585:1a2f::4585:1a2f(Preferred)
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : 216.146.35.35
216.146.36.36
NetBIOS over Tcpip. . . . . . . . : Disabled


Post has been edited 3 time(s), last time on Apr 9 2011, 5:31 am by poison_us. Reason: need to close encase tag :|




Apr 9 2011, 6:05 am Riney Post #5

Thigh high affectionado

Virus check, restart your computer, and make sure you dont have anything that could conflict with networks such as Hamachi or Tunngle.



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-- Updated as of December 2021 --

Apr 9 2011, 6:12 am Lanthanide Post #6



Very interesting results. What sort of internet connection do you have, cable, DSL or something else? Do you have a single router/modem that you have sitting between your computer and the ISP, or do you have two devices, eg a modem from the ISP and a second router that plugs into that, which you plug your PC into?

Interestingly your PC is picking up a globally routable address, 69.133.26.47, rather than a private address such as 192.168.1.x. So I think you're probably on cable, and only have a single device that you're plugging your PC directly into?

Comparing the results is strange, too. Only 2 things have changed between the outputs. One thing that is missing when your connection is *working* is the default gateway of 69.133.24.1 which surprises me because I would normally expect that the absence of the default gateway would result in the connection not working.

The other obvious thing that has changed is that when your connection is not working, a toredo tunnel has been set up. And when it is working, the toredo tunnel doesn't exist. The fact that your connection periodically dies after 8-10 minutes leads me to believe that it is the existence of this tunnel being created that is breaking your connection. I don't know why this tunnel would auto-configure itself, or why it would suddenly start doing do. Anyway, toredo tunnels are a technology used with IPv6 which you almost surely do not need to be using. There has been a bit of talk around the web in the last few months about "mis-configured clients" where they have an active, but broken, implementation of IPv6 which causes problems - if they had no IPv6 connectivity, or IPv6 that behaved correctly but wasn't available, it'd be fine, but when they fall in between, where the connection isn't available but they think it is, you can end up with connection problems.

Anyway, long-story short, try this: http://www.mydigitallife.info/2007/09/09/how-to-disable-tcpipv6-teredo-tunneling-in-vista/



None.

Apr 9 2011, 6:50 am poison_us Post #7

Back* from the grave

Quote
Interestingly your PC is picking up a globally routable address, 69.133.26.47, rather than a private address such as 192.168.1.x. So I think you're probably on cable, and only have a single device that you're plugging your PC directly into?
Yessir. Attempting with netsch, successfully disabled. Let's see if everything's kosher.

EDIT: Took even less time to die this time.

Post has been edited 1 time(s), last time on Apr 9 2011, 6:55 am by poison_us.




Apr 9 2011, 6:57 am Lanthanide Post #8



:/

Do another ipconfig /all with the new configuration, both when it's broken and when it's working.

Actually it looks like when I compared those outputs I got them round the wrong way.

When your network is broken, you are indeed missing the default gateway, and when it is working, the default gateway is present. This is definitely the root of your problem, the question is what is causing it. The teredo gateway is unlikely to have anything to do with this. The strange thing is that your DHCP lease hasn't changed between the two outputs.

One thing to try: next time your connection breaks, instead of pulling out the ethernet cable, go to command prompt and do:
ipconfig /release
ipconfig /renew

That should probably fix it temporarily, and maybe permanently if you're lucky.

Googled some potential fixes to try:
http://support.microsoft.com/kb/970313
http://social.technet.microsoft.com/Forums/en-US/itprovistanetworking/thread/27fd86ad-caad-4698-9032-63550695ee3d

On the second one, I can't see a way to link directly to the reply I'm looking at, but it's 5th from the bottom by on Alper Yazgan on Thursday, July 01, 2010 1:02 PM and the next reply to it. That post indicates that the registry might be corrupt with a blank newline in the default gateway prompt. If you look at your output above, it is completely blank, whereas the apple bonjour and original report on the 2nd link talks about a default gateway of 0.0.0.0, which you don't have.

Another page that is essentially the same as the second one above: http://www.albofish.co.uk/2011/02/01/stop-win7-forgetting-default-gateways/

Post has been edited 4 time(s), last time on Apr 9 2011, 7:32 am by Lanthanide.



None.

Apr 9 2011, 8:28 am poison_us Post #9

Back* from the grave

Quote
One thing to try: next time your connection breaks, instead of pulling out the ethernet cable, go to command prompt and do:
ipconfig /release
ipconfig /renew
Temporary fix, at least.

EDIT: Failed. Trying Microsoft's fix, because the technet's is too complicated.

EDIT2: Also failed. Going to see if removing Bonjour might help.

Post has been edited 1 time(s), last time on Apr 9 2011, 8:39 am by poison_us.




Apr 9 2011, 8:48 am Lanthanide Post #10



The technet one is the one that is most likely to be the solution to the actual problem. The albofish link at the bottom is the same deal.



None.

Apr 9 2011, 9:08 am NudeRaider Post #11

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch

Do you have secondary networking adapter / router you can try out? Possibly from friends or a really old computer.

Have you tried using static IP settings?
Try giving yourself this IP 10.254.128.2
and Subnet Mask 255.255.255.0
Default Gateway 10.254.128.1

Not sure for the DNS servers. Try your current first:
216.146.35.35
216.146.36.36

Then try the Default Gateway 10.254.128.1 for both

and lastly the Google ones
8.8.8.8 and 8.8.4.4

Although it doesn't seem likely your problem is DNS related, but I'm stating them for a complete valid static configuration.

Post has been edited 1 time(s), last time on Apr 9 2011, 9:17 am by NudeRaider.




Apr 9 2011, 1:00 pm Lanthanide Post #12



Those IP addresses you gave are highly unlikely to work. It looks like he's accessing the DHCP server inside the ISP network directly, on the 10.254.128.x (/24?) network, but that DHCP server is clearly dishing out globally routable addresses from the 69.133.26.47/22 network. Really the only static addresses I'd configure are those that are already configured.

That would probably fix the problem at least temporarily, but because the ISP is dishing up addresses out of /22, it's likely that if he statically configured that IP address, some other user would be allocated it later at some point, causing conflicts. DHCP is supposed to be smart enough not to do that though, but still best not to set a static IP address if we can get away without needing to. Also reading about the "default gateway keeps being reset" issue from various sites, manually setting a default gateway doesn't resolve the problem anyway.



None.

Apr 9 2011, 1:29 pm NudeRaider Post #13

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch

It still doesn't hurt to try. In my experience whenever something odd is happening with a computer even when you try something that's not working you can sometimes observe behavior that gives you a hint as to what's actually the problem.
At the very least it's useful to narrow it down.




Apr 9 2011, 2:47 pm poison_us Post #14

Back* from the grave

Quote from Lanthanide
The technet one is the one that is most likely to be the solution to the actual problem. The albofish link at the bottom is the same deal.
Albofish is more understandable...I don't have a second interface folder or whatever, and that's what was confusing me. Removing Bonjour didn't help, though supposedly that's the program causing it. Trying Albofish.

EDIT: I'm not sure if I deleted the right thing, but in any case it's back. It's saying I should be seeing a blank line...and I do, but only for Domain, which the others also have >.>

EDIT3: I just noticed, when trying to set my DhcpDefaultGateway to a static address (which failed, btw: it changed back to 0.0.0.0) upon restarting it cannot connect to the internet at all. It's not connected to an "Unnamed Network", and it actually says it can't connect to the internet.

EDIT4: Tried a variety of regedits and cmd changes, even reinstalling the driver. All of which do nothing. Fucking nothing. All my hate. Trying random shit now.

EDIT5: Problem solved. I have no idea what fixed it, but the last thing I did was manually download the previously installed windows update, uninstall the driver, install update, and reinstall driver. No clue what it changed, or why it changed it, but it's fixed so far.

Post has been edited 5 time(s), last time on Apr 9 2011, 8:19 pm by poison_us.




Apr 9 2011, 9:14 pm Lanthanide Post #15



Quote from NudeRaider
It still doesn't hurt to try. In my experience whenever something odd is happening with a computer even when you try something that's not working you can sometimes observe behavior that gives you a hint as to what's actually the problem.
At the very least it's useful to narrow it down.
I already know what the actual problem is - the default gateway disappearing. I just have no idea what would be causing that.

Poison, my understanding about what the blank line thing meant, is this, best shown on several lines:
Default gateway address (following lines are content of this registry entry):
"
69.133.24.1"

In other words, my interpretation of it is that there is an entire blank line in the entry itself, which is wrong, it should be like this:
"69.133.24.1"



None.

Apr 9 2011, 9:41 pm NudeRaider Post #16

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch

Quote from Lanthanide
I already know what the actual problem is - the default gateway disappearing. I just have no idea what would be causing that.
Well, obviously. But was it really necessary to nitpick because I said "the problem" instead of "cause of the problem"?




Apr 11 2011, 2:24 pm Aristocrat Post #17



This problem has been happening to a sizable number of others on the IRC network that I frequent and they all resolved the problem by doing absolutely nothing; their networks went back to normal and stopped asploding after a few days. I would bet that this is an ISP-wide issue affecting various specific regions. Wait out and see what it happens to do.



None.

Apr 12 2011, 4:05 am ShadowFlare Post #18



For reference, network connections without a default gateway are shown as "unidentified network" in Windows Vista/7.



None.

Apr 12 2011, 8:31 pm Wing Zero Post #19

Magic box god; Suck it Corbo

Quote from Aristocrat
This problem has been happening to a sizable number of others on the IRC network that I frequent and they all resolved the problem by doing absolutely nothing; their networks went back to normal and stopped asploding after a few days. I would bet that this is an ISP-wide issue affecting various specific regions. Wait out and see what it happens to do.
My internet has been doing this for about a week now and its getting annoying. Do you have a time frame for how long this goes on before if finally stops?




Apr 12 2011, 8:41 pm poison_us Post #20

Back* from the grave

Run windows update, if you haven't recently. I updated, then fiddled around with the files in the update and got it to work through some black magic.




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