Re: [sheflug] Help with broadband

[Alex Hudson <home [at] xxxxxxxxxxxxxx>]

On Mon, 2006-03-13 at 19:30 +0000, J Simpson V21 wrote:
> I pinged google and put www.google.com in the box and it brought up 
> 216.239.59.99.

If this is actually on your computer, you don't have a DNS problem. 

Assuming it's on your router, then that means your router is setup fine,
but your computer isn't.

> I also opened Mozilla and typed in those ip addresses. Well the google 
> ones work.  Ebay doesn't, although it most know the numbers are for 
> ebay  because it say ebay could not be found!  And the strangest one is 
> I typed in my isp and a said 'no website configured at this address, 
> www.v21.co.uk.

I wouldn't expect them to work per se, though it sounds like you were
getting through to the right webservers. 

As you know, when you resolve a website address, you get an IP address
back. But, more often than not, you need both the IP address and the
website address to get the site you want: just typing in the IP address
generally won't get you the site you're after (and no, sadly, there
isn't a way to specify both in the URL bar).

What you need to do is find out what DNS servers are set on your
computer: you need to look in the /etc/resolv.conf file, even if you use
DHCP. I'm betting it will probably have a line like:

nameserver 192.168.0.1

... or whatever the IP address of your router is. If that's the case, it
could be that your Fedora Core 2 is doing "advanced" things which are
confusing the router. One way to tell is by running these commands:

	host www.google.co.uk
	host www.google.co.uk 216.239.32.10

If the first one doesn't work (server timed out, or similar) but the
second one does, then it's likely that your router is getting confused
by the complexity/modernity of the Linux DNS lookups.

If neither of them work, then it's more likely to be something even more
complex like explicit congestion notification.

Sadly, although people in the Linux work often say "buy a router, not a
modem" it's not always as simple as that - for example, my girlfriend
had a router which wouldn't respond to DHCP, and my Dad had a router
which wouldn't do DNS lookups for me.

Cheers,

Alex.


___________________________________________________________________

Sheffield Linux User's Group -
http://www.sheflug.co.uk/mailfaq.html

  GNU the choice of a complete generation.