On Thu, 2017-09-07 at 17:47 +0200, Richard Schütz wrote: > According to IEEE Std 802.11-2016 (16.2.3.4 Long PHY SIGNAL field) > all of > the following rates are mandatory for a HR/DSSS PHY: 1 Mb/s, 2 Mb/s, > 5.5 Mb/s and 11 Mb/s. Set IEEE80211_RATE_MANDATORY_B flag for all of > these instead of just 1 Mb/s to correctly reflect this. Hmm, I guess technically you're correct, since 11b added what's now Clause 16 (was Clause 18 at the time), and that has all of them mandatory? But perhaps this was actually intended for Clause 15 compatibility? johannes