Network guru help sought please

[David Christopher Chipman]

Timothy Murphy wrote:
> Bill Davidsen wrote:
>
>   
>> Since you are tracing the packets, you can look at the DNS request for 
>> mirrorlist and see what IP is being returned by your nameserver. I'm not 
>>     
> sure 
>   
>> how you conclude that the mirrorlist "is not interpreted" whatever that 
>>     
> means, 
>   
>> you must have gotten a valid IP from DNS, but the name is truncated or not 
>>     
> in 
>   
>> DNS properly, or whatever. Run tcpdump with the -n option and see what IP 
>>     
> you 
>   
>> get back.
>>     
>
> Thanks for your response.
> By "not interpreted" I meant that the packets all went to and from
> fedoraproject.org , rather than any mirror.
>
> I'll see what tcpdump -n tells me, as you suggest.
> The main problem with tcpdump is that there are millions of packets
> from the rest of the family using the same WiFi access point.
>
>   
>> I suspect your DNS, but please provide more information. Those lines work 
>>     
> here 
>   
>> for FC{9,10,11} so I believe there's something broken at your end.
>>     
>
> I'm sure you are right.
> I tried changing the servers in /etc/resolv.conf , 
> but that made no difference.
>
>   
Hi Tim,

I know I'm just jumping in here, but could I suggest that you use 
Wireshark, given your level of technical knowledge? it may be easier to 
understand the packets when they are shown graphically, and not the 
text-based tcpdump. BTW, you can use tcpdump and store the packets in a 
file and have wireshark read te tcpdump file.