Unexplained ICMP messages.....

[Jean-Christophe Smith]

Perhaps the DNS server is doing some sort of proximity based load balancing
using ICMP. Based on the latency, they might respond with an IP closer to
you, or so that is the theory.

Jean-Christophe Smith
jsmith at vitalstream.com

-----Original Message-----
From: a.r.kuiters at kpn.com [mailto:a.r.kuiters at kpn.com] 
Sent: Monday, November 17, 2003 11:16 PM
To: bind-users at isc.org
Subject: Unexplained ICMP messages.....

Hi All,

Could anyone explain to me where the icmp message come from?

rac0.lac2076.mnc001.mcc262.gprs
  49242 03:26:50.099337 193.254.163.1         145.7.74.14           DNS
Standard query response, No such name
  52359 03:28:50.858128 145.7.74.14           193.254.163.1         ICMP
Echo (ping) request
  52360 03:28:50.858129 145.7.74.14           193.254.163.1         DNS
Standard query A 

Is this normal behaviour?

Regards,

Rob