how to identify dhcp server ?

bjh · 10-23-2008, 08:56 AM

Hi,

How can I identify the ip of the dhcp server that gave a dsl box its ip address?

Have Googled the question but none of the general linux responses seem to apply to dsl.Or I am dumb.

Thanks,

Brian H.
Uxbridge Ont

carltm · 10-24-2008, 04:24 PM

I'm using CentOS and it uses dhclient to get dhcp addresses.
It has a log in /var/lib/dhclient/dhclient.leases, and that
includes a statement like "option dhcp-server-identifier
192.168.0.1;".

If DSL doesn't use dhclient, try "find /var/lib -name '*leases*'"
to see if you find the log file.

irishbitte · 10-24-2008, 04:37 PM

You mean the server that gave your dsl box it's external IP?

That would be the default gateway of your dsl box. In my case, if i go to 192.168.1.254, i get a webpage for configuring my router. This information will be in there under something like 'IP Gateway'.

Hope thats what you're looking for!