From: Eric Dumazet <eric.dumazet@gmail.com>
To: Rick Jones <rick.jones2@hp.com>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
Andi Kleen <andi@firstfloor.org>, Glen Turner <gdt@gdt.id.au>,
netdev@vger.kernel.org
Subject: Re: UDP path MTU discovery
Date: Mon, 29 Mar 2010 23:29:12 +0200 [thread overview]
Message-ID: <1269898152.1958.86.camel@edumazet-laptop> (raw)
In-Reply-To: <4BB11510.9000302@hp.com>
Le lundi 29 mars 2010 à 14:01 -0700, Rick Jones a écrit :
> I would get the alphabet soup completely garbled, but the DNS folks are talking
> about EDNS (?) message sizes upwards of 4096 bytes - encryption/authentication
> and other angels being asked to dance on the head of the DNS pin are asking for
> more and more space in the messages.
>
> So, someone will have to blink somewhere - either DNS will have to go TCP and
> *possibly* take RTT hits there depending on various patch streams, or the IEEE
> will have to sanction jumbo frames and people deploy them widely, or it will
> have to become feasible to actually do the occasional IPv6 datagram
> fragmentation and get a timely retransmission out of a UDP application on a PMTU
> hit.
>
1) 4096 bytes UDP messages... well...
2) Using regular TCP for DNS servers... well...
I believe some guys were pushing TCPCT (Cookie Transactions) for this
case ( http://tools.ietf.org/html/draft-simpson-tcpct-00.html )
(That is, using an enhanced TCP for long DNS queries... but not only for
DNS...)
next prev parent reply other threads:[~2010-03-29 21:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-26 0:02 UDP path MTU discovery Glen Turner
2010-03-26 0:53 ` Rick Jones
2010-03-26 3:26 ` David Miller
2010-03-26 17:48 ` Rick Jones
2010-03-31 23:42 ` Glen Turner
2010-03-31 23:51 ` Hagen Paul Pfeifer
2010-04-01 0:06 ` Rick Jones
2010-03-26 3:24 ` David Miller
2010-03-28 8:41 ` Andi Kleen
2010-03-31 23:57 ` Glen Turner
2010-04-01 0:57 ` Andi Kleen
2010-03-28 8:50 ` Andi Kleen
2010-03-29 17:01 ` Rick Jones
2010-03-29 20:14 ` Andi Kleen
2010-03-29 20:25 ` Rick Jones
2010-03-29 20:50 ` Edgar E. Iglesias
2010-03-29 21:01 ` Rick Jones
2010-03-29 21:29 ` Eric Dumazet [this message]
2010-03-29 23:38 ` Templin, Fred L
2010-03-30 5:20 ` Andi Kleen
2010-03-30 6:06 ` Eric Dumazet
2010-03-30 6:16 ` Andi Kleen
2010-03-30 6:17 ` UDP path MTU discovery II Andi Kleen
2010-03-30 6:16 ` UDP path MTU discovery Edgar E. Iglesias
2010-03-30 6:19 ` Andi Kleen
2010-03-30 8:20 ` Edgar E. Iglesias
2010-03-30 14:12 ` Andi Kleen
2010-03-30 22:04 ` Edgar E. Iglesias
2010-03-30 15:58 ` Templin, Fred L
2010-03-30 16:06 ` Andi Kleen
2010-03-31 23:43 ` Glen Turner
2010-04-01 0:55 ` Andi Kleen
2010-04-02 5:41 ` Glen Turner
2010-04-04 10:25 ` Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1269898152.1958.86.camel@edumazet-laptop \
--to=eric.dumazet@gmail.com \
--cc=andi@firstfloor.org \
--cc=edgar.iglesias@gmail.com \
--cc=gdt@gdt.id.au \
--cc=netdev@vger.kernel.org \
--cc=rick.jones2@hp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.