Vista - DNS configuration problem - really out of ideas.

I just moved to a new place and for past three days I kept getting the
same error with DNS configuration trying to connect to the router
provided in the house, wired or wireless. My computer can always
connect to the router with only local access.

I'm running Windows Vista Home Premium (x32), which could connect to
other networks just fine before I came to this new place. The router is
a linksys WRT54G connected to a linksys RT41 BU. (I'm not sure why)

Here's my ipconfig /all with everything in Tcp/ipv4 set to automatic.

===============================

Microsoft Windows [Version 6.0.6000]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.


C:\Windows\system32>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Mizo
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Compact Wireless-G USB Adapter
Physical Address. . . . . . . . . : 00-1D-7E-04-22-3D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.101(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, June 03, 2008 4:37:00
PM
Lease Expires . . . . . . . . . . : Wednesday, June 04, 2008 4:40:53
PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Class ID . . . . . . . . . . :
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.15.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
fe80::5efe:192.168.1.101%17(Preferred)
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling
Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 10:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

================================

On the status page of the WRT54G, internet IP address is
192.168.15.100, router Default Gateway is 192.168.15.1, DNS server is
192.168.15.1 which seems to be correctly configured by the RT41 BU
DHCP.

However, on the status page of the RT41 BU, IP address,default gateway
and DNS server are all 0.0.0.0 . I don't know much about networking, so
I'm not sure how to take this.

The weird thing is I actually got internet access once right after I
manually set my computer's DNS server to 192.168.1.1 yesterday.
Unfortunately someone accidentally pulled the power on WRT54G and I
never could replicate it after that.

I started to think maybe 192.168.15.1 is not the right DNS server. so I
tried to ping some IP addresses and found out I couldn't connect to any
external addresses. Is there a way to find out my DNS server address
for sure?

I've also tried various methods mentioned on the internet. I've
disabled Tcp/ipv6, removed 3rd party internet security software,
changed the DhcpConnForceBroadcastFlag register. I've reseted winsock
and tcp/ip and tried to manually input DNS address, including some
public DNS addresses. Nothing seems to make any difference. (public DNS
simply won't connect.)

If not for the one moment of internet access yesterday, I would put the
doubt on the modem or my ISP. But it actually worked really well before
someone pulled the power. Now, I don't know what to do anymore.

Any tips would be appreciated.


--
mirrorzoom
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