Resolved No Internet Connection - My PC (7 Pro) only

Hi all,

Yesterday, I wiped the 32-bit XP installation on my Lenovo T61P laptop in favor of 64-bit Windows 7.

All ran smoothly, and with the exception of a few missing drivers, I was good to go. Network connection here at work is wired. Internet, domain joining, etc all went fine.

Then I packed up and went home. Connected to my wireless there without issue and even setup a VPN connection back to work. All went well.

This morning, I returned to work and low and behold, I have no internet access... HUH?!

I took a screenshot of the LAN connection details, where everything looks right. I also put my "ipconfig /all" into a text file. I'd like to post them here, but don't see a way to. In the ipconfig, it is showing the proper Default Gaateway in the list, BUT before that, there is a DG of 0.0.0.0 which makes no sense.

I can ping internal addresses. I cannot ping web addresses. It returns as "Destination Host Unreachable ".

I'd appreciate any help. I am the IT Manager (dept. of ONE) here at a school and without internet access I am in a world of hurt. Windows 7 is still new to me, so I am diagnosing as best I can, but would appreciate help from you experts! Thanks!

 

Great! Here's the ipconfig file... I'll see what I can do about posting the image somewhere...

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\cbartlett>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : LFDCS-L2025
Primary Dns Suffix . . . . . . . : lfdcs.lan
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : lfdcs.lan
internal

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.ma.comcast.net.
Description . . . . . . . . . . . : Intel(R) Wireless WiFi Link 4965AGN
Physical Address. . . . . . . . . : 00-21-5C-1E-9F-B5
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : internal
Description . . . . . . . . . . . : Intel(R) 82566MM Gigabit Network Connecti
on
Physical Address. . . . . . . . . : 00-1F-E2-12-A1-D2
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::f9d7:c048:a633:7b1%11(Preferred)
IPv4 Address. . . . . . . . . . . : 10.34.1.3(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.254.0
Lease Obtained. . . . . . . . . . : Tuesday, November 03, 2009 8:06:05 AM
Lease Expires . . . . . . . . . . : Tuesday, November 03, 2009 8:06:05 PM
Default Gateway . . . . . . . . . : 0.0.0.0
10.34.0.1
DHCP Server . . . . . . . . . . . : 10.34.0.1
DHCPv6 IAID . . . . . . . . . . . : 234889186
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-81-0E-CA-00-1F-E2-12-A1-D2

DNS Servers . . . . . . . . . . . : 10.34.0.30
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.internal:

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

Tunnel adapter Local Area Connection* 11:

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



As you can see, the default gateway of 10.34.0.1 IS there, but it's AFTER a 0.0.0.0. I don't know what that is... 10.34.0.1 IS the proper gateway, and it is also the DHCP server. My DNS server is manually set to 10.34.0.30, which is also correct. So I am getting an IP address, just no connectivity except for locally (for example, I can see all my local LAN resources).

THANKS!

 

OK, here's the screenshot of the Adapter Settings Details. I hope this works. Never used Flickr before...

http://www.flickr.com/photos/44274466@N03/4072403122/

 

Wait a sec... Now it works! All of a suden, after about the 10th reboot of the day... The 0.0.0.0 is now gone on the DG listing in ipconfig and it works. ***?? *SIGH*

I'll take it, but does anyone know what WAS going on?

I'll see if this lasts...

 

So much for that... Not working again... While it was up, I downloaded Lenovo's System Update 4 (for Windows 7) so I could try to get drivers. Required a reboot. After rebooting, internet gone again... Same issue...

 

I don't know where it's coming from, but I have a theory. Firstly, it is intermittent. At this point, it works most times. Sometimes not. But mainly, it'll work if I really let it fully finish loading at starttup. If I jump the gun and launch apps a bit early, it tends to fail. Don't know what that has to do with anything...

But I think the 0.0.0.0 culprit is IPv6... So I'd like to uninstall that protocol. But I can't seem to even though I'm an admin. Can I do this?

 

Wait, nevermind... I just realized you can uncheck IPv6... I don't think that uninstalls it, but perhapps just disables it on this LAN interface? I'm going to watch it for a few days and see what effects there are... Will let you know.

EDIT: Well, that didn't work... By disabling IPv6, I ompletely killed it... No internet access at all. Seems that the interface needs IPv6 for some reason... ARGH

OK, so seeing as how IPv6 now does NOT seem to be the bad guy, what could be? I am set to receive a DHC address. I am. I manally set DNS to 10.34.0.30, which is my correct DNS server. Everything else is at default. The domain couldn't be doing this because I'm the only one having the issue, AND I'm the only one with an OS other than XP Pro... It's gotta be a local problem with 7...

Here's something interesting... So when you RELEASE IP info with "ipconfig/release" what usually happens is that you get a listing of all 's for IP address, subnet mask, etc... But normally, the default gateway is blank. Totally blank... For example, that is what I see on this PC (the XP PC I am using when my web doesn't work on the laptop). BUT, when I run that same command on the now-not-working Windows 7 laptop, I see 0.0.0.0 in the default gateway field, and that is after I've run "ipconfig /release ".

This is, no dobut, the problem... But where could it be coming from?! AAAAAHHHHH!

 

FIXED:

It was the Bonjour Sevrice from Apple that was screwing everything up. This article explains the issue. I set the Bonjour Sevice to a DELAYED start and it now all works perfectly fine. Here is the article.

 

No problem. I just hope it helps someone else in the future. Thanks!