Re: Broken PMTUD / ICMP blackhole?
On Wed, 18 Dec 2019 07:29:08 -0600
John Hasler <jhasler@newsguy.com> wrote:
> Celejar writes:
> > I'm not that familiar with the internals, but basically, the phone
> > presents a wifi access point, the computer connects to it as it would
> > to any AP, and the phone apparently routes packets to and from the
> > cellular network.
>
> Yes, I know that. However, the packets are being encapsulated in some
> way. They may be encapsulating the IP packets directly or they may be
> encapsulating the ethernet packets as PPP does. Either way there is an
I assume the phone first just routes them from wifi to cellular. I'm
not familiar with how it then transmits them over the cellular link.
> opportunity for problems similar to those that have developed with
> PPPoE because encapsulization always involves adding headers. The
> packets are being encapsulated for the WiFi too, of course.
Yes, but that happens with virtually all this machine's network
connections.
Celejar
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