Do the machines with DNS problems get their IP addresses via
DHCP? Do they get their nameserver info from DHCP as well?
If so, is DHCP still working? DHCP-assigned addesses have
to be renewed via leases.
Maybe the kids machines/phones DHCP leases expired before
the other leases ...
Have you done an upgrade lately? Changes to the firewall?
You can use the dig command to direct DNS queries to a particular
DNS server:
dig @server.to.query domain.to.ask.about
dig @server.to.query domain.to.ask.about NS
Hope this helps - do send more questions if you have them.
bjb
On Sun, Jan 01, 2012 at 11:55:53AM -0500, ed stuckems wrote:
> Folks:
>
> This may be slightly off-topic, so I hope you'll consider this request
> for help appropriate for this list.
>
> My home network is suddenly misbehaving and after poking around a bit
> I'm at a loss to explain why things aren't working and I can't seem to
> fix the problem. Any help/advice would be greatly appreciated.
>
> Here's the problem ... My kids' computers recently stopped serving web
> pages. After poking around a bit, it appears that dns requests from
> their machines aren't being resolved. Poking around more, I've
> discovered that the game consoles and the android based phone aren't
> working either and I suspect it's for the same reasons. The phone
> worked on the wifi network as recently as last week. However, there
> are machines on the network that are working! My linux box, mac book
> pro (running Mac OSX), iPad, and Windows Vista computers are all
> working.
>
> All the machines are able to access internal machines/servers/services
> via ip address (I'm not using dns for internal servers) and everything
> internal can be pinged and is able to ping (most) everything else. On
> those machines that aren't working, nslookup is not able to resolve
> host names and nslookup returns stating that the dns server(s) timed
> out.
>
> There are 2 dns servers provided to clients on the network: the
> caching server on the router, and the dns server provided by my
> service provider. nslookup reports time outs for both servers.
>
> I'm at a loss to explain what's happening and any advice or guidance
> for correcting the issue would be greatly appreciated.
>
> regards
> eds.
> _______________________________________________
> Linux mailing list
> Linux [ at ] lists [ dot ] oclug [ dot ] on [ dot ] ca
> http://oclug.on.ca/mailman/listinfo/linux
---end quoted text---