Re: Intermittent internet since upgrading to squeeze

On Wed, Mar 2, 2011 at 5:48 PM, Camaleón <noelamac@xxxxxxxxx> wrote:
On Mon, 28 Feb 2011 22:31:55 +0200, George wrote:

On Mon, Feb 28, 2011 at 2:04 PM, Camaleón wrote:

Simple ethernet networking can be "not that simple" :-)

Are you using dhcp or any dial client (pppd)? Are you using
NetworkManager?
Can you still make local pings?
Can you browse the web if you specify the IP address of the host?
Ethernet card and driver?


I'm using dhcp. I don't know if I'm using networkmanager.

It is enabled by default, so if you didn't turn it off it should be up,
configured and running.

Once the problem starts I can only ping localhost.

When it happens, run "/sbin/ifconfig" to get the current status of your
network adapter and also "ip ro" to display the available routes.

I can't even ping the gateway router.

That can mean that you have lost all of your network card data (ip,
netmask, gateway...). The above commands will tell.

My /etc/network/interfaces is as follows:

(...)

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

auto eth0

Then you are using a dhcp server to get all the data for the interface.
You will have to find out why you are losing contact with your dhcp
server, which I guess is configured in the router itself, right?

As first step, you could (as root):

grep -i dhcp /var/log/syslog

Thanks to everyone that replied, however the problem seems to have
fixed itself. I don't recall doing anything special, other than doing
ifdown/ifup a bunch of times.


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