Re: monitor mode APs and bpf DLTs

2021-06-01 Thread Martin Husemann
On Mon, May 24, 2021 at 02:19:20PM +0200, Martin Husemann wrote: > Hey folks, > > I am slightly confused about the bpf details for wireless devices. ... and once you have seen it work, it all unriddles. So I made two errors: - I picked run(4) as a test example, but radiotap suppo

monitor mode APs and bpf DLTs

2021-05-24 Thread Martin Husemann
Hey folks, I am slightly confused about the bpf details for wireless devices. First (minor nit) there is a bogus diagnostic printed by tcpdump when trying to use monitor mode (-I) for non-montior-mode VAPs. It tells me about the wrong mode VAP and claims: To create a new montior mode VAP use: