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no data packet except broadcast or multicast


I am capturing with a TP-Link TL-WN722N in monitor mode and promiscious mode on channel 1 (HT40+) on a wifi n and I don't see any data frames/packets except the ones to broadcast (ff:ff:ff:ff:ff:ff) or multicast (33:33:00:00:00:01, or 01:00:5e:7f:ff:fa) MAC addresses.

I see the control and management frames. No problem there. But for the data frames (type:2, subtype: 0), there are only the ones addressed to the mac above which are broadcast or multicast.

Why ? Is there a config or a switch I need to set ? Is it a driver or hardware problem ?

It is not only with wireshark but with tshark, always on ubuntu 17.10 on a Dell Insprion 15 3521.

But also with tshark or scapy on a rpi3 running archlinux-arm

This is not SPAM, damn robot !!!