[PLUG] DNS Resolution Problems - 5 second delay

Steve Bonds 1s7k8uhcd001 at sneakemail.com
Wed Oct 8 15:34:02 UTC 2003


On Wed, 8 Oct 2003, AthlonRob AthlonRob-at-axpr.net |PDX Linux| wrote:

> I've run in to a problem that has me stumped.  About one in every 10 DNS
> querries takes over five seconds to resolve.  It's like there's a five
> second damper before it even *tries* to resolve.
>
> I watched my DNS server's end of things, and sure enough, when things
> get delayed, they just aren't even hitting the server.  I also tried
> with my ISP's DNS servers to verify it wasn't my server causing the
> problems.
>
> I set up a while loop that runs host pdxlinux.org constantly, output its
> output to a file, and am grepping for real in that file.  Has anybody
> ever seen anything like this?  I'm really somewhat stumped.  :-(

Does the client send the packet and the server not receive it?  Good
old-fashioned packet loss could well explain your random first-send
timeouts.

  -- Steve




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