Hi Tommy,
> - ... on cellular
> carrier networks, which is one of the main deployment targets
> here.
Unless I'm mistaken 8801 is not required/supported in 3GPP specs. Typically,
PCO IEs are used there.
FWIW, the network already provides the following to a UE (excerpt from 23501):
== (0-RTT Converter)
iii) The network shall send MPTCP proxy information to UE, i.e. the IP
address, a port number and the type of the MPTCP proxy. The following type of
MPTCP proxy shall be supported in this release:
- Type 1: Transport Converter, as defined in IETF RFC 8803 [82].
The MPTCP proxy information is retrieved by the SMF from the UPF during
N4 session establishment.
The UE shall support the client extensions specified in IETF RFC 8803
[82].
==
And
== (MPQUIC Proxy)
The network shall send MPQUIC proxy information to UE, i.e. one IP address of
UPF, one UDP port number and the proxy type (e.g. "connect-udp"). This
information is used by the UE for establishing multipath QUIC connections with
the UPF, which implements the MPQUIC Proxy functionality.
=
Cheers,
Med
> -----Message d'origine-----
> De : Int-area <int-area-boun...@ietf.org> De la part de Tommy
> Pauly
> Envoyé : mardi 25 juillet 2023 23:34
> À : Marc Blanchet <marc.blanc...@viagenie.ca>
> Cc : int-area@ietf.org; mas...@ietf.org
> Objet : Re: [Int-area] [Masque] draft-pauly-intarea-proxy-config-
> pvd
>
> Hi Marc,
>
> To start — I have no objection to there being some mechanism to
> discover a proxy using dns-sd / bonjour! If someone has a good use
> case for that, that certainly is a possibility.
>
> I do think it would be a different use case than the one for this
> network-provided proxy provisioning, however. A couple salient
> points to consider:
> - While the local router may be able to point you to the
> appropriate proxies to use, the proxies themselves are likely not
> on the local link or multicast area. Instead, they would likely be
> some infrastructure associated with the network operator, deeper
> in the network.
> - A dns-sd solution would allow many parties to advertise such
> capabilities on the network. The case we’re concerned with here is
> knowing the one that comes from a network operator, not other
> peers.
> - While I can’t rule it out categorically, I’m not aware of many
> cases where we’d be able to use multicast dns-sd on cellular
> carrier networks, which is one of the main deployment targets
> here.
>
> Thanks,
> Tommy
>
> > On Jul 25, 2023, at 3:57 PM, Marc Blanchet
> <marc.blanc...@viagenie.ca> wrote:
> >
> > Hello,
> > Saw your presentation yesterday at masque and now read your
> draft. Fine by the overall approach, but I was wondering if you
> have considered to use DNS-SD (aka Bonjour)? I could see a proxy
> on the local network advertising its proxy service and the client
> « finding » the proxy by the DNS-SD/Bonjour mechanism. Seems
> straightforward to me. Also enables multiple proxies to « offer »
> their service, so redundancy right out of the box. In other words,
> I’m looking at this as a service discovery not provisioning. I am
> surely missing something?
> >
> > Regards, Marc.
> >
> > --
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