>From the RFC : 4.2.1. UDP usage
Messages sent using UDP user server port 53 (decimal). Messages carried by UDP are restricted to 512 bytes (not counting the IP or UDP headers). Longer messages are truncated and the TC bit is set in the header. I'm confused. ----- Original Message ----- From: "Daniel Hartmeier" <[EMAIL PROTECTED]> To: "Stefan Sonnenberg-Carstens" <[EMAIL PROTECTED]> Cc: "David Krause" <[EMAIL PROTECTED]>; "Dave Rocks" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Wednesday, February 19, 2003 3:50 PM Subject: Re: how stupid is this? > On Wed, Feb 19, 2003 at 03:42:52PM +0100, Stefan Sonnenberg-Carstens wrote: > > > How stupid are YOU !??!?!? > > DNS uses tcp/53 for zone transfers regarding slave servers, not big packets > > ! > > Relax, he's right (see RFC1035). DNS uses TCP when the packet size > exceeds the UDP limit (512 bytes payload). > > Daniel > > >
