One way to split the difference between these two would be to use an
extension to negotiate the encrypted record format.

-Ekr

On Tue, Nov 15, 2016 at 9:10 AM, Martin Thomson <martin.thom...@gmail.com>
wrote:

> On 14 November 2016 at 21:58, Nikos Mavrogiannopoulos <n...@redhat.com>
> wrote:
> >  For draft‐mavrogiannopoulos­‐dtls­‐cid­‐00 and we needed to extend the
> > DTLS un-authenticated part of the DTLS record header with an additional
> > field. That works well if this is the only draft ever extending the
> > DTLS record header. If not, modification order would be undefined.
>
> Where is this draft?
>
> > Would it make sense to introduce an extension header for DTLS 1.3 in
> > the lines of the IPv6 extension headers? That would allow TLS extension
> > negotiation to add more items on the un-authenticated header, and
> > potentially also remove redundant headers.
>
> Without seeing the draft, I can't really say whether this is sensible,
> but I've been working on trimming the DTLS 1.3 header down to
> something sane.  That might be incompatible with any attempt to add
> unauthenticated data to the header.
>
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