Yes, but how do you define a "larger DNS request" That is really just a zone transfer. A DNS request is a request for a single resolution. A request for a block of IP's or names or anything else is a full or partial zone transfer.
In general, it is best to open both TCP and UDP port 53 to your DNS servers, but I have gotten away with only using UDP on servers that are only serving queries and are not authoritative for any domains. --Jason ----- Original Message ----- From: "Boosten, Peter" <[EMAIL PROTECTED]> To: "'Jason M. Kusar'" <[EMAIL PROTECTED]>; "Darren Birkett" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Wednesday, February 05, 2003 8:26 AM Subject: RE: [squid-users] Does squid use UDP or TCP for it's DNS requests > # > # All DNS requests are done over UDP. DNS only uses TCP for > # zone transfers. > # > > Not entirely true: larger DNS-requests are done over TCP as well. > > Peter > > Disclaimer > 1. This e-mail is for the intended recipient only. If you have received it > by mistake please let us know by reply and then delete it from your system; > access, disclosure, copying, distribution or reliance on any of it by anyone > else is prohibited. > > 2. If you as intended recipient have received this e-mail incorrectly, > please notify the sender (via e-mail) immediately. This e-mail is > confidential and may be legally privileged. DSM does not guarantee that the > information sent and/or received by or with this e-mail is correct and does > not accept any liability for damages related thereto. >
