[ale] OT BS DSL/DNS

[mattyml at bellsouth.net]

On Thu, 16 Dec 2004, Calvin Harrigan wrote:

> linux wrote:
>
>> Here is what Bell South DSL (I have supposedly the Highest Speed option)
>> returns for a dhcp request
>> 
>> search launchmodem.com
>> nameserver 205.152.37.23
>> nameserver 205.152.144.23
>> 
>> 
>> Is it possible there is something wrong  with either of thes nameservers 
>> that someone else has noticed lately.
>> 
>> I crank up ethereal and sometimes the  AAAA query response can take 10 to 
>> 20 seconds,to return to
>> my machine,  then once http
>> download does start  my system goes back to the DNS servers possibly 2-3 
>> times to get the same info or
>> similare info. During these retries it may come up with  Host Unreachable 
>> (in the ethereal trace that is)
>> icmp error just a host of junk.
>> Sometimes it goes to  the  144.23 address and the  37.23 addr will return 
>> the response.
>> 
>> I can post a small trace if someone is willing to help me work it out.  I 
>> understand a lot of what is
>> going on but the  DNS Response taking  3-10 seconds is a little 
>> unbelievable.  I only appear to have
>> this DNS problem at Home, not on the road and not at Bell South Sites I 
>> work at.
>> 
>> I did get to BS 2nd Level Support today and they put in a request for 
>> someone to call me from
>> network whatever so that group can view the incomfing  DNS request to their 
>> routers associated
>> with my DSL line and can see where the respone is getting tied up at.
>> 
>> The same behavior is exihibited whether I connect Directly to the Westel 
>> 2200 modem or go thru
>> a Linksys WRT54G  SW Version  v2.00.8 then thru the Wintel.
>> 
>> For example while writing this post I cranked up ethereal and browsed to
>> www.brownco3.com
>> start to finish it took  about 53 seconds before the page displayed  etc. 
>> etc. etc.
>> thanks in advance for any help


There is a bug in Bind 9 that caused my sporadic DNS problems:

http://www.openbsd.org/errata.html (look @ the bind bug)

I setup a caching name server on my home network with OpenBSD, and
the problem seems to be fixed.


>> jt
>> _______________________________________________
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>> Ale at ale.org
>> http://www.ale.org/mailman/listinfo/ale
>> 
> I have noticed the DNS slowdown as well.  I have statically entered my 
> network information for now.  First I was using what seemed to be the Miami 
> DNS server, that too seems to bog down occasionally.
> Since that I've started to use a completely different DNS server that I am 
> not at liberty to disclose.  With the bellsouth DNS servers I've even had 
> sites the refuse to resolve at all, even with the delay.
> I live on the south side of town if that makes any difference.  Not sure of 
> the CO.
>
> Calvin...
> _______________________________________________
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> Ale at ale.org
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>

Ryan Matteson - UNIX Administrator | GPG ID: 92D5DFFF
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