[dns-operations] EDNS buffer size on TCP connections?

Mukund Sivaraman muks at isc.org
Wed Jun 22 16:04:45 UTC 2016


On Wed, Jun 22, 2016 at 03:48:34PM +0000, Wessels, Duane wrote:
> 
> > On Jun 22, 2016, at 8:22 AM, Mukund Sivaraman <muks at isc.org> wrote:
> > 
> > On Wed, Jun 22, 2016 at 10:53:30AM -0400, David C Lawrence wrote:
> >> A responder can still set it to the maximum payload size it would
> >> support for future UDP transactions.
> > 
> > I'm not sure the RFC defines it for this purpose. It's supposed to be
> > valid for that particular query only, and is a request field.
> > 
> 
> RFC 6891 section 6.2.4 describes its use by responders.

Ah.. didn't know of this.

		Mukund
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