Watson,

> On Dec 19, 2024, at 11:54 AM, Watson Ladd <watsonbl...@gmail.com> wrote:
> ...
> Why do you need .local vs. .sdfi24241.subscribers.isp.example.com and
> setting that as a search domain?

The device is accessible by both names for the given address, so it should 
advertise both names in the certificate.

> Also note that the local router can
> make DHCP option advertisements to configure things.

For sure.

> ..
> I don't understand why a one time requirement of net connectivity at
> registration/renewal makes it worthless. Let's solve the 90% we can.

Because there are environments where you don't have Internet connectivity *at 
all* (intentionally or unintentionally).  Because requiring a local device to 
talk to a remote service exposes PII.

I have worked in environments where you cannot access outside networks.  I have 
also had the displeasure of setting up network gear (a router as it happens) 
that had a one-time requirement for Internet connectivity at a semi-remote 
location with spotty satellite Internet access, to the point that I returned 
said equipment and let the manufacturer know why.

> The problem with local trusted authority is that we don't really have
> a way to get it on the local devices, especially limited ones, that
> people can use.

Matter seems to do it.  And really you are not talking about *all* IoT devices, 
just those that are capable of TLS and TCP/IP - less than that and you are 
bridging to other kinds of connectivity that provide their own layer of 
security/access.

________________________
Michael Sweet

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