Hi.

I thought I made myself clear.
I leave in France. My system(s) is/are set up to use FR as default
regulatory domain.

But when I plug in that tp-link card, I am restricted to use CN
regulatory domain. Why am I the only one to see this as a problem ?

I know that one can only have one regdom defined on the system. I have
set it up myself. So why is it changed behind my back by some card or
whatever ?
Like I said, I am left with the option, to disable crda, or to use 2
systems, one for each card !

Or may be try Windows when this is not messed up like that ??? Well,
it's not on Windows that I will be able to use monitor mode, anyway.

Never mind.

2018-04-12 17:52 GMT+02:00 Dan Williams <d...@redhat.com>:
> On Thu, 2018-04-12 at 08:18 -0700, Steve deRosier wrote:
>> On Thu, Apr 12, 2018 at 3:51 AM, Arend van Spriel
>> <arend.vanspr...@broadcom.com> wrote:
>> > On 4/12/2018 10:42 AM, solsTiCe d'Hiver wrote:
>> > >
>> > > Hi.
>> > >
>> > > This is beyond my comprehension that you could assert this is a
>> > > non issue.
>> >
>> >
>> > Well. I am just saying that it is by design. There is no way for
>> > the
>> > regulatory code to determine where you and your hardware actually
>> > reside so
>> > instead it takes a conservative approach.
>> >
>>
>> To say it another way: mixing regulatory domains on your host system
>> should result in a _smaller_ set of channels - ie only those channels
>> at the intersection of the two.
>>
>> And another wrinkle to consider - one of the 802.11 amendments (can't
>> remember which one) actually causes the radio to listen to the
>
> 802.11d I believe, from the early 2000s.
>
> Dan
>
>> beacons
>> around it, determine what the local regulatory domain is based on the
>> beacons it hears, and then lock to that regulatory domain. It's
>> possible for that information to be propagated up to the card's host
>> and the regulatory domain then would affect both cards. That's how
>> it's supposed to work, though I don't factually know Linux does this
>> in all cases.  Could it be you're somewhere where CN is the local
>> regulatory domain and the TL-WN722N has this feature?
>>
>> In any case, as Arend points out, despite the hand-wringing that
>> regulatory domains cause users trying to do something particular,
>> between certain rules and regulations and certain manufacturers bad
>> interpretations and implementations around it, there's little that
>> can
>> be done about it. Fact is, your radio must comply to whatever
>> regulatory domain you are in, otherwise it's breaking the rules. And
>> people breaking the regulatory rules is part of what's gotten
>> governments to pass even worse (for us OSS guys) laws that tighten
>> those rules down further.
>>
>> You asked who to contact. Its not the LKML - it's your relevant
>> government body. And certain manufacturers who improperly interpret
>> said rules because it's easier for them.
>>
>> - Steve
>>
>> --
>> Steve deRosier
>> Cal-Sierra Consulting LLC
>> https://www.cal-sierra.com/

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