Re: [DNSOP] [dnsext] Computerworld apparently has changed DNS protocol

[Mark Andrews <marka at isc.org>]

In message <87639qrq25.fsf at mid.deneb.enyo.de>, Florian Weimer writes:
> * Alfred H=F6nes:
> 
> > There must be a hidden trick to introduce DNS Jumbograms we just
> > forgot to mention ....
> 
> The claims about firewall issues seems dubious to me.  It's certainly
> not the 512 byte limit which is a problem here---I think we've got
> pretty good empiric evidence that it's not a problem anymore.  Several
> root responses are already larger than 512 bytes, and you can't send
> mail to AOL or Yahoo if you're behind a firewall that swallows
> responses larger than 512 bytes.  People tend to fix such things,
> especially if the Internet is a new thing to them and they want to
> communicate with each other, instead of merely being right and
> protocol compliant.

And the protocol says that answers bigger than 512 bytes are legal
if EDNS is in use.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org