--- wpa_supplicant-2.1/src/drivers/driver_nl80211.c	2014-02-04 12:23:35.000000000 +0100
+++ driver_nl80211.c	2020-01-09 09:11:35.943884000 +0100
@@ -5903,6 +5903,8 @@
 	    wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
 		return -1;
 
+	nl80211_disable_11b_rates(drv, drv->ifindex, 1);
+
 retry:
 	msg = nlmsg_alloc();
 	if (!msg)
@@ -8625,6 +8627,7 @@
 	}
 
 	nl80211_mark_disconnected(drv);
+	nl80211_disable_11b_rates(drv, drv->ifindex, 1);
 
 	msg = nlmsg_alloc();
 	if (!msg)