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Two interfaces, but WinXP DNS service continues to use DNS entries for disconnected/disabled interfaI have a customer who uses their laptop both at work and home. For
work they have a statically entered NATed IP address (172.x.x.x), subnet mask, gateway, and DNS servers on their wired interface. At home, they have a NATed wireless connection with DHCP, but on a different private subnet (192.168.1.x) than the one at work. When I used ipconfig I see that all the information is correct, but browsing the web fails. Using nslookup we learned that DNS lookups continue to work off the wired interface, even though that interface is disconnected. Disabling the wired interface doesn't help. To clarify, "running ipconfig /all" at the customer's home does not show any of the statically entered DNS servers for the wired interface. I'm mystified why WinXP continues to use the wired interface's statically entered DNS settings even though that interface is down. Any ideas? Frank posting the result of ipconfig /all here may help.
Bob Lin, MS-MVP, MCSE & CNE Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com <frnk***@gmail.com> wrote in message news:1161183185.001557.80670@f16g2000cwb.googlegroups.com... I have a customer who uses their laptop both at work and home. Forwork they have a statically entered NATed IP address (172.x.x.x), subnet mask, gateway, and DNS servers on their wired interface. At home, they have a NATed wireless connection with DHCP, but on a different private subnet (192.168.1.x) than the one at work. When I used ipconfig I see that all the information is correct, but browsing the web fails. Using nslookup we learned that DNS lookups continue to work off the wired interface, even though that interface is disconnected. Disabling the wired interface doesn't help. To clarify, "running ipconfig /all" at the customer's home does not show any of the statically entered DNS servers for the wired interface. I'm mystified why WinXP continues to use the wired interface's statically entered DNS settings even though that interface is down. Any ideas? Frank I don't have access to that machine right now, but 'ipconfig /all'
shows the wired adapter as disconnected, and the wireless lists the wireless router's IP address as the DHCP server and gateway, and of course assigns the correct IP address and DNS servers. Yet browsing the web with DNS names fails, and I can confirm the browsers problems by running nslookup, which pulls up a reference to a DNS server of 172.x.x.x. which resides at the customer's work site. So, any more ideas where WinXP is storing this 172.x.x.x IP address and superseding the ones that were handed out via DHCP? Frank Robert L [MVP - Networking] wrote: Show quoteHide quote > posting the result of ipconfig /all here may help. > > Bob Lin, MS-MVP, MCSE & CNE > Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net > How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com > <frnk***@gmail.com> wrote in message news:1161183185.001557.80670@f16g2000cwb.googlegroups.com... > I have a customer who uses their laptop both at work and home. For > work they have a statically entered NATed IP address (172.x.x.x), > subnet mask, gateway, and DNS servers on their wired interface. > > At home, they have a NATed wireless connection with DHCP, but on a > different private subnet (192.168.1.x) than the one at work. When I > used ipconfig I see that all the information is correct, but browsing > the web fails. Using nslookup we learned that DNS lookups continue to > work off the wired interface, even though that interface is > disconnected. Disabling the wired interface doesn't help. To clarify, > "running ipconfig /all" at the customer's home does not show any of the > statically entered DNS servers for the wired interface. > > I'm mystified why WinXP continues to use the wired interface's > statically entered DNS settings even though that interface is down. > Any ideas? > > Frank > > ------=_NextPart_000_00BE_01C6F2A3.46FA2EF0 > Content-Type: text/html; charset=iso-8859-1 > Content-Transfer-Encoding: quoted-printable > X-Google-AttachSize: 2114 > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> > <HTML><HEAD> > <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> > <META content="MSHTML 6.00.2900.2963" name=GENERATOR> > <STYLE></STYLE> > </HEAD> > <BODY bgColor=#ffffff> > <DIV>posting the result of ipconfig /all here may help.</DIV> > <DIV><BR>Bob Lin, MS-MVP, MCSE & CNE<BR>Networking, Internet, Routing, VPN > Troubleshooting on <A > href="http://www.ChicagoTech.net">http://www.ChicagoTech.net</A> <BR>How to > Setup Windows, Network, VPN & Remote Access on <A > href="http://www.HowToNetworking.com">http://www.HowToNetworking.com</A> </DIV> > <BLOCKQUOTE > style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> > <DIV><<A href="mailto:frnk***@gmail.com">frnk***@gmail.com</A>> wrote in > message <A > href="news:1161183185.001557.80***@f16g2000cwb.googlegroups.com">news:1161183185.001557.80670@f16g2000cwb.googlegroups.com</A>...</DIV>I > have a customer who uses their laptop both at work and home. For<BR>work > they have a statically entered NATed IP address (172.x.x.x),<BR>subnet mask, > gateway, and DNS servers on their wired interface.<BR><BR>At home, they have a > NATed wireless connection with DHCP, but on a<BR>different private subnet > (192.168.1.x) than the one at work. When I<BR>used ipconfig I see that > all the information is correct, but browsing<BR>the web fails. Using nslookup > we learned that DNS lookups continue to<BR>work off the wired interface, even > though that interface is<BR>disconnected. Disabling the wired interface > doesn't help. To clarify,<BR>"running ipconfig /all" at the customer's > home does not show any of the<BR>statically entered DNS servers for the wired > interface.<BR><BR>I'm mystified why WinXP continues to use the wired > interface's<BR>statically entered DNS settings even though that interface is > down.<BR>Any ideas?<BR><BR>Frank<BR></BLOCKQUOTE></BODY></HTML> > > ------=_NextPart_000_00BE_01C6F2A3.46FA2EF0-- 
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