Wireless works, but no route to host

[oneman]

On 23-aug-2008, at 22:44, oneman wrote:

>
> On 23-aug-2008, at 7:20, Nils Kassube wrote:
>
>> oneman wrote:
>>> The problem as far as I can tell is that the applications trying to
>>> use the connection somehow fail to do so.
>>>
>>> So, why could it be that my applications like ping or the browser
>>> don't actually use an active network connection? There's no other
>>> connection, the cable is disconnected. Could it be that it fails to
>>> somehow 'publish' this new active interface to the applications?
>>
>> Can you ping your router by IP address?  What is the error message
>> if that
>> doesn't work?
>
> I get 'Destination host unreachable'
>
>>
>> Can you connect to your router configuration page (if there is one)
>> via IP
>> address? What is the error message if that doesn't work?
>
> No, I get the message 'can't establish connection to the server at
> xxx.xxx.xxx.xxx
>
>>
>> Although the cable is disconnected there might be still a default
>> route
>> entry via your cable interface. Check the output of the "route -n"
>> command. There should be only one line starting with "0.0.0.0"
>> which is
>> the default route.
>
> That seems to be ok and pointing to the wireless network interface:
>
> Destination  Gateway        Genmask  Flags  Metric  Ref  Use  Iface
> 0.0.0.0      <router's ip>  0.0.0.0  UG     0       0    0    wlan0
>
>>
>> Other than that, could there be a firewall somewhere? Please check
>> your
>> router configuration, there might be filter rules which prevent your
>> machine from accessing the internet.
>
> No, the router is ok. I can use the wireless AP from another laptop
> and I'm not using any kind of mac address filtering. The laptop does
> get access to the same router when using a cable to connect it to the
> AP's switch ports.
>
I've made a dump with wireshark, it can be found at http:// 
webdisk.onemanifest.net/temp/wireshark_dump.pcap

It seems the inteface is connected, it sees network communication  
from others. But it keeps doing ARP requests for the location of the  
router at 192.168.1.1. I don't understand why it can't get an answer  
since no other device on this network ahs any issues with the router.

the laptop's MAC address is 00:00:00_1a:73:e4 and it's ip is  
192.168.210 (by dhcp)

My network knowledge is far to limited to make anything more out of  
this. Maybe someone else sees something obviously wrong in this file?

Thx,

Peter