> And I know the IP specification defines the minimal MTU size to 576.
> So, we may need a very short RFC for updating the definition of MTU,
^
to 1280
-- Orange
> in RFC 791.
From: Yasuhiro Orange Morishita / 森下泰宏 <[email protected]>
Date: Wed, 11 Sep 2013 02:02:34 +0900 (JST)
> Paul-san,
>
> > for unsigned responses, i think a v6 max-udp-size of 1220 and a v4
> > max-udp-size of 512 is what's called for.
>
> I believe typical datalinks of MTU=576 are (were) X.25 and SLIP
> (Of course, it's not RRL's one). And I believe both links are deprecated.
>
> And I know the IP specification defines the minimal MTU size to 576.
> So, we may need a very short RFC for updating the definition of MTU,
> in RFC 791.
>
> -- Orange
>
> From: Paul Vixie <[email protected]>
> Date: Mon, 09 Sep 2013 07:31:42 -0700
>
> > ...
> >
> > Yasuhiro Orange Morishita / 森下泰宏 wrote:
> > > Paul-san, and folks,
> > >
> > > Now we (including me) have known the dangers and limitations,
> > > so should we set max-udp-size to 1220 on every authoritative servers?
> >
> > for unsigned responses, i think a v6 max-udp-size of 1220 and a v4
> > max-udp-size of 512 is what's called for. i've not seen an explanation of
> > how dnssec-covered data can be poisoned, even with fragment attacks.
> > orange, can you write RFC 6891-bis?
> >
> > the messaging that would go out with this is, everybody needs to sign their
> > dns data, and everybody needs to validate, and if you're planning to send
> > large responses then your authority servers must be v6 reachable, and your
> > v4 performance will be low due to tcp.
> >
> > vixie
> >
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