Re: [ubuntu-za] network problem

On Tue, 2006-05-09 at 23:20 +0200, Dimitri Mallis wrote:
hi list,

i was having troble with my network, but i could conect to the
internet. then i changed something, then i was able to browez the
network. when i rebooted i could not connect to the internet :<

pppoe -> sais it connected

what is lo ? Local Loopback -> was never there before

From Wikipedia: A loopback is a communications channel with only one
endpoint. Any message transmitted through such a channel is immediately
received by the selfsame channel.

lo, the loopback interface, is (close your eyes now if you don't want
the geek explanation) what client/server protocols on the same system
use to speak to each other. Loopback is not your problem, and I'd be
worried if it *wasn't* working.

that was never there before. how can i get rid of that. i think that
is were my problem is.

I suspect the problem may be with routing. You can type "route" at the
command line (or use the gnome-network-tools item from your System menu,
I think) to see which interface is used to send information out. On my
computer it says

[rewley@everland: ~] route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.11.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
0.0.0.0 192.168.11.1 0.0.0.0 UG 0 0 0 wlan0

which means that, to reach the outside world, packets must be sent to my
wireless interface wlan0. If your default (0.0.0.0) interface is eth0,
as I suspect, then packets are being spewed out of your ethernet
interface and thus not making it to the internet.

If you're feeling intrepid, you could fix routing problems by following
the instructions on the man page for route - some command like "route
add default ppp0" - without editing or restarting anything.

You can fix it by disabling eth0 (either using the network configuration
tool from the menu or by editing /etc/network/interfaces) and then
restarting your network ("sudo /etc/init.d/network restart" or however
you do things - perhaps just restart).

I may be wrong, but let us know what route says, and for good measure
also what "arp -n" outputs. The gurus on this list might be able to
tell you how to configure routing the right way.

Robert.


OR
how can i delete ALL my network & internet settings & then reconfigure
everything?

root@ubuntu:~# pppoe-start
......... Connected!
root@ubuntu:~# ping www.google.com
ping: unknown host www.google.com
root@ubuntu:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:70:26:01:46
inet addr:10.0.0.4 Bcast:255.255.255.255 Mask:255.0.0.0
inet6 addr: fe80::250:70ff:fe26:146/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:148 errors:0 dropped:0 overruns:0 frame:0
TX packets:200 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:14932 (14.5 KiB) TX bytes:14823 (14.4 KiB)
Interrupt:23 Base address:0xc000

lo Link encap:Local Loopback
inet addr: 127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1500 (1.4 KiB) TX bytes:1500 (1.4 KiB)

ppp0 Link encap:Point-to-Point Protocol
inet addr:165.146.74.221 P-t-P:165.146.64.1
Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:102 (102.0 b) TX bytes:61 (61.0 b)

root@ubuntu:~#



--
To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx
with a subject of "unsubscribe". Trouble? Contact listmaster@xxxxxxxxxxxxxxxx

Relevant Pages

  • Re: One computer on 2 networks
    ... On the server take the new "internet Nic" and set it up properly for the ... Create a static route in the OS's routing table that uses the LAN Router ... don't work in the Network Admin Dept. I'm a developer. ...
    (microsoft.public.windows.server.networking)
  • RE: Running public IPs inside an RFC 1597 network
    ... > I'm running a typical Class C RFC 1597 network in my lab. ... know or care if we humans designate a subnet as public or private. ... is the absolute most general route there is for a machine. ... In a correctly configured system when you define an interface, ...
    (freebsd-questions)
  • Re: One computer on 2 networks
    ... don't work in the Network Admin Dept. I'm a developer. ... I am working on a project where we need to expose to the internet the ... a Web Server, VPN Server, Remote Desktop. ... So the correct route add syntax would be: ...
    (microsoft.public.windows.server.networking)
  • Re: 2003 server config for routing and remote access
    ... The internal network interface has nothing to do with this. ... act as a LAN router to get the traffic to the other private subnet. ... As I said the server sees the internet. ...
    (microsoft.public.win2000.ras_routing)
  • Re: [ubuntu-za] network problem
    ... i was having troble with my network, but i could conect to the ... when i rebooted i could not connect to the internet:< ... You can type "route" at the ... I think) to see which interface is used to send information out. ...
    (Ubuntu)