Help: No internet connection

Simon Schneebeli simon.schneebeli at okko.org
Mon Dec 14 19:40:53 UTC 2009


On 12/14/2009 05:58 PM, R. G. Newbury wrote:
>>>> On Sun, 2009-12-13 at 13:35 -0700, simon.schneebeli at okko.org wrote:
>
>>>>> At my brothers place I managed to connect to the internet with no
>>>>> problem. All programmes worked, so I could add all the additional
>>>>> programs I needed and install the latest updates.
>
>>> RPM: "Couldn't resolve host"
>>>
>>> To mention again: These messages appear immediately, not only after 
>>> some
>>> seconds like the server doesn't answer...
>>
>> What strikes me about that list is the ones that don't work are
>> NetworkManager aware - I wonder if NetworkManager is telling them the
>> connection is offline.
>
> Check that your router has IP address entries for your ISP's DNS 
> server(s).
>
> Check that you have not forgotten that you turned on access 
> restrictions on your router, and in particular that you have not 
> limited the number of DHCP addresses which the router can serve out, 
> and that you are not over that limit. (Been *there*...real 
> hair-puller!). This is a likely possibility given that you got things 
> to work at your brother's house.. Maybe he has NO security settings 
> enabled??? Check that DHCP is turned ON.
>
> Check that system-config-network has IP address entries for your ISP's 
> DNS server(s) and that the gateway address in on the correct network 
> (ie 192.168.1.1 and not by mistake 192.168.0.1 etc.) You might want to 
> try settings a STATIC IP address to avoid DHCP contention errors. This 
> will not help if you have MAC address filtering turned ON, at the router.
>
> At a console enter:
> 'service NetWorkManager stop'
> 'service wpa_supplicant stop'
> 'service ip6tables stop'
>
> With a WIRED connection ONLY:
> 'service iptables restart'
> 'service network restart'
>
> This should A) stop all the wireless services and things we don't want 
> in the way, and B) start ONLY the things we want to see.
>
> Then:
> 'ifconfig eth0'  should show, in the second line something like:
> "inet addr:192.168.1.99  Bcast:192.168.1.255  Mask:255.255.255.0"
> If not, try 'ifup eth0' then 'ifconfig eth0' again.
>
> If you have an address, start with 'ping 192.168.1.1' (or whatever 
> your router's IP address is). That *should* work. Then try 'ping 
> yahoo.com'. If that works, then the problem(s) are internal to the 
> configuration of the programs you are running (ie proxy settings in 
> Firefox)
>
> If you used a static IP, but cannot ping the router, then it is likely 
> the wiring or router setup. If you get no address reported, then the 
> network setup is wrong. (This is why a static address is useful for 
> this case).
>
> If you get an IP address and can ping the router, but cannot ping 
> externally, then it is probably the router's DNS setup. When the wired 
> connection works, THEN you can try to set up wireless (and/or revert 
> to a DHCP IP scheme).
>
> And if you ARE going to set up wireless then I strongly recommend wicd 
> (at wicd.sourceforge.net) as a replacement for NetworkManager. It 
> works at least as well as NM, but has a MUCH more transparent setup 
> and control structure and can remember/act upon different wireless and 
> wired connections, such as you need for a laptop at work and at home. 
> For this it helps if you use 'static DHCP' where the router parses the 
> MAC address and delivers an address accordingly, triggered by the DHCP 
> request from the laptop etc.
>
> Geoff

Meanwhile, the wired connection works (was it because I manually added 
the DNS???, anyway it works), but the wired connection still doesn't work.

Here's what I get with ifconfig.

[root at sangam simon]# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:1A:6B:CE:85:A7
           inet addr:192.168.1.33  Bcast:192.168.1.255  Mask:255.255.255.0
           inet6 addr: fe80::21a:6bff:fece:85a7/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:7852 errors:0 dropped:0 overruns:0 frame:0
           TX packets:6432 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:100
           RX bytes:6456499 (6.1 MiB)  TX bytes:815876 (796.7 KiB)
           Memory:fe200000-fe220000

And here is what I get with netstat -rn:

[root at sangam simon]# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt 
Iface
192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 
eth0
192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 
wlan0
0.0.0.0         192.168.1.1     0.0.0.0         UG        0 0          0 
eth0


As for wicd: I used that when working with Ubuntu and was always quite 
happy. So let's give it a try:

I downloaded wicd from here: http://atrpms.net/dist/f12/wicd/

It tells me the following:
python-urwid is needed by package wicd-1.6.2.2-1.fc12.i686 
(/wicd-1.6.2.2-1.fc12.i686)

So I get python-urwid from http://atrpms.net/dist/f12/python-urwid/

Test Transaction Errors:   file 
/usr/lib/python2.6/site-packages/urwid-0.9.8.4-py2.6.egg-info from 
install of python-urwid-0.9.8.4-3.fc12.i686 conflicts with file from 
package urwid-0.9.8.4-6.1.i386
   file /usr/lib/python2.6/site-packages/urwid/__init__.py from install 
of python-urwid-0.9.8.4-3.fc12.i686 conflicts with file from package 
urwid-0.9.8.4-6.1.i386
   file /usr/lib/python2.6/site-packages/urwid/__init__.pyc from install 
of python-urwid-0.9.8.4-3.fc12.i686 conflicts with file from package 
urwid-0.9.8.4-6.1.i386
   file /usr/lib/python2.6/site-packages/urwid/canvas.py from install of 
python-urwid-0.9.8.4-3.fc12.i686 conflicts with file from package 
urwid-0.9.8.4-6.1.i386
   file /usr/lib/python2.6/site-packages/urwid/canvas.pyc from install 
of python-urwid-0.9.8.4-3.fc12.i686 conflicts with file from package 
urwid-0.9.8.4-6.1.i386
   file /usr/lib/python2.6/site-packages/urwid/curses_display.py from 
install of python-urwid-0.9.8.4-3.fc12.i686 conflicts with file from 
package urwid-0.9.8.4-6.1.i386
   file...

My, my. What a headache. These thing make me feel kind of lost...

Simon




More information about the fedora-list mailing list