pinging problem with DNS server

[Pete Ehlke]

On Wed, May 15, 2002 at 10:46:57PM -0400, Danny Mayer wrote:
> 
> DNS servers don't use ping (ICMP). What are you really seeing?  Why don't
> you post some logs to demonstrate what you are really concerned about?
> 
Not so fast, Danny ;)

AIX 4.3.3 servers will do exactly that. They're attempting to perform
PMTUD using ICMP, and they do it with every host they talk to. It was an
ugly practice, and IBM dropped it pretty quickly. 

-Pete

> At 10:21 AM 5/14/02, Matt A wrote:
> >Hi,
> >
> >We're running AIX 4.3.3 with Bind 4.9.x
> >
> >Our DNS server appears to be pinging each host that makes a request to it.
> >Obviously this generates a lot of unwanted traffic. Any ideas how to turn
> >this off?
> >
> >Thanks
> >
> >Matt
> >mda at unb.ca
> >
> 

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