1st at all, you're right - by tcpdump I see NS queries for reverse NS; but for some reason in ping output I see IP, not name. > > > On Thursday 06 May 2004 13:07, Karasik, Vitaly wrote: > > probably you're right - I see "-n" key in ping's man, > > but I don't see any names in ping output when I "ping > a.b.c.d" and I don't > > Let me guess - you're makeing the test in a network that > doesn't have reverse > name resolution configured for it's IPs, right? :-)
no, our network does have reverse resolution > > > see any problem with ping by IP even when I break resolver > configuration. > > [I speak about ping from iputils-20020927-11] > > It very much depends on the exact nature of the "breakage". > Try this: put a an > IP for the name server in /etc/resolv.conf which is a "black > hole" - swallws > all the packet you send to it, like in the case of a mis > configured firewall > and try to ping somwhere and you'll see what I mean. I did my test by putting wrong addresses as NS in my resolv.conf. Agree - NS working as "black hole" may cause delays. BUT: if we'll back to the original question, I still believe there is no DNS problem. rgds, Vitaly *********************************************************************************** Information contained in this email message is intended only for use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the [EMAIL PROTECTED] and destroy the original message. *********************************************************************************** ================================================================To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
