Internet: browsers fails to connect to SOME sites, not all, for no reason.

[NoOp]

On 01/28/2009 10:41 AM, Vincent Trouilliez wrote:
> I tried using a third party DNS, the famous "OpenDNS".
> I used it in the past (just out of curiosity), with success.
> 
> https://www.opendns.com/homenetwork/start/device/ubuntu
> 
> However when trying doing the ifdown/up eth0, I got an error, a weird
> one !
> 
> ifdown said:
> 
> "ifdown: interface eth0 not configured
> Ignoring unknown interface eth0=eth0."
> 
> 
> How on earth could I be able to browse websites if eth0 (only NIC in
> the system), was not unknown and unconfigured !
> This is getting crazy really :-/
> 
> I issued an ifconfig, see below, and as you would expect, eth0 is very
> much there and undoubtly show my IP (my ISP always gives an
> IP starting with 80 something).
> 
> 
> **************************************
> vincent at Lotus-Esprit:~$ ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:1d:92:6e:b5:36  
>           inet addr:85.69.146.144  Bcast:85.69.146.255
> Mask:255.255.255.0 inet6 addr: fe80::21d:92ff:fe6e:b536/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:2794792 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:178316 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:532366727 (532.3 MB)  TX bytes:34613822 (34.6 MB)
>           Interrupt:219 Base address:0x6000 
> ****************************************
> 
> 
> --
> Vince
> 

And what does:

$ cat /etc/resolv.conf

show?