[103attendees] Limiting TX power (offtopic)

[Mukund Sivaraman <[e-mail]>]

Sitting in the hackathon, this message shows up in my Linux's dmesg:

[337139.388641] wlp3s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 38:90:a5:ee:94:ef

It appears that it's attempting to reduce from the maximum txpower in
this country by some amount (max[23] - amount[0]) as advertised by the
WiFi AP.

I've tried (but failed) to do this successfully in my home network with
hostapd (using ieee80211d=1, local_pwr_constraint=<number>) in a 2.4 ghz
network. I guess IETF is using off-the-shelf equipment here instead of
directly administering hostapd, but what is the equipment broadcasting
that advertises that the txpower should be lowered?

		Mukund