DNS issue

[Dan Abernathy]

Hi folks.

I have a user here who uses his notebook on a wireless network here at the office with no problems.

When he takes the notebook home and attempts to use it on his Linksys home wireless network (which has other computers working correctly on it), he cannot browse the web.

Some preliminary troubleshooting reveals that the notebook is getting a new IP address, subnet mask, default gateway, etc. when it associates to his home network - but it is retaining DNS server information from the office. So he ends up with an odd mix of settings, like:

IP Address 192.168.0.1 <-- correct
Subnet Mask 255.255.255.0 <-- correct
Default Gateway 192.168.0.254 <--correct (address of his Linksys box)
DNS Servers: 10.0.2.10 <-- valid at work, but not at home
10.0.2.8 <-- ditto

His other, working computers show the Linksys at 192.168.0.254 as the only DNS server entry.

I've tried having him do "ipconfig /release" and then "ipconfig /renew" to get a new DHCP lease and refresh all the info, but even after that the notebook still has DNS entries from the office.

Any ideas how to force it to renew ALL of the info? Some registry key I can change from 0 to 1 to say "yes, I really do want you to renew *everything* when you connect"? Is his Linksys perhaps misconfigured and not handing out DNS information?

Any help appreciated.

 

[AJR]

Consider TCP/IP alternate configuration option for home.

"Dan Abernathy" <dabernathy*AT*claytoncorp.com> wrote in message Hi folks.

I have a user here who uses his notebook on a wireless network here at the office with no problems.

When he takes the notebook home and attempts to use it on his Linksys home wireless network (which has other computers working correctly on it), he cannot browse the web.

Some preliminary troubleshooting reveals that the notebook is getting a new IP address, subnet mask, default gateway, etc. when it associates to his home network - but it is retaining DNS server information from the office. So he ends up with an odd mix of settings, like:

IP Address 192.168.0.1 <-- correct
Subnet Mask 255.255.255.0 <-- correct
Default Gateway 192.168.0.254 <--correct (address of his Linksys box)
DNS Servers: 10.0.2.10 <-- valid at work, but not at home
10.0.2.8 <-- ditto

His other, working computers show the Linksys at 192.168.0.254 as the only DNS server entry.

I've tried having him do "ipconfig /release" and then "ipconfig /renew" to get a new DHCP lease and refresh all the info, but even after that the notebook still has DNS entries from the office.

Any ideas how to force it to renew ALL of the info? Some registry key I can change from 0 to 1 to say "yes, I really do want you to renew *everything* when you connect"? Is his Linksys perhaps misconfigured and not handing out DNS information?

Any help appreciated.

 

[Dan Abernathy]

Consider TCP/IP alternate configuration option for home.

I looked at that, but it is my understanding that the alternate TCP/IP configuration is only applied when a DHCP server is not present on the network. His home Linksys *is* acting as a DHCP server; I think the settings it assigns would override what I put in for the alternate network?

 

[Steve Winograd [MVP]]

Hi folks.

I have a user here who uses his notebook on a wireless network here at the
office with no problems.

When he takes the notebook home and attempts to use it on his Linksys home
wireless network (which has other computers working correctly on it), he cannot
browse the web.

Some preliminary troubleshooting reveals that the notebook is getting a new IP
address, subnet mask, default gateway, etc. when it associates to his home
network - but it is retaining DNS server information from the office. So he ends
up with an odd mix of settings, like:

IP Address 192.168.0.1 <-- correct
Subnet Mask 255.255.255.0 <-- correct
Default Gateway 192.168.0.254 <--correct (address of his Linksys box)
DNS Servers: 10.0.2.10 <-- valid at work, but not at home
10.0.2.8 <-- ditto

His other, working computers show the Linksys at 192.168.0.254 as the only
DNS server entry.

I've tried having him do "ipconfig /release" and then "ipconfig /renew" to get a
new DHCP lease and refresh all the info, but even after that the notebook still
has DNS entries from the office.

Any ideas how to force it to renew ALL of the info? Some registry key I can
change from 0 to 1 to say "yes, I really do want you to renew *everything*
when you connect"? Is his Linksys perhaps misconfigured and not handing
out DNS information?

Any help appreciated.

Have you checked the wireless connection's TCP/IP properties to be
sure that "Obtain DNS server address automatically" is selected?
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[Dan Abernathy]

Have you checked the wireless connection's TCP/IP properties to be
sure that "Obtain DNS server address automatically" is selected?
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)


That was the problem. Thank you. He swore he'd never touched his TCP/IP settings (this notebook is only weeks old) but it's another lesson for me to verify myself instead of relying on what someone says they did or didn't do.

Thanks again,

Dan

 

[Steve Winograd [MVP]]

That was the problem. Thank you. He swore he'd never touched his TCP/IP
settings (this notebook is only weeks old) but it's another lesson for me to
verify myself instead of relying on what someone says they did or didn't do.

Thanks again,

Dan

You're welcome, Dan. I'm glad that my suggestion helped you solve the
problem. Thanks for reporting the result.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com