Hi Paul, sorry for taking so long to get back to you.... I have seen this happen when you a single host name point to two ip addresses: IE: $ host omniture.112.2o7.net omniture.112.2o7.net has address 216.52.17.213 omniture.112.2o7.net has address 216.52.17.116 If you telnet (port 80) directly to one of these addresses, (ip address) you will instantly see a reply. If however you telnet to telnet omniture.112.2o7.net 80 You will see that it takes quite a while as the telnet CLIENT attempts to do a reverse lookup.... Very strange.... Andrew On Feb 12, 2006, at 12:37 AM, Paul Dwerryhouse wrote:
On Fri, Feb 10, 2006 at 11:31:47AM +0100, Andrew Miehs wrote:Why does the telnet client do a reverse lookup when connecting to a server?!Client? I've just run a couple of tests with telnet, while watching the logs of my caching nameserver, and I do not see any indication that theclient is doing a reverse lookup. Are you perhaps meaning that the remote server is performing a reverse lookup when you connect to it? If that is the case, it is almost certainly the tcp wrappers on the machine that is doing it.