Hi All, I am executing below mentioned command on linux kernel 4.0.4 and observing below mentioned error log. 'Failed to update rate sets in kernel module'. # hostapd -B /etc/hostapd.conf Configuration file: /etc/hostapd.conf [ 199.672712] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready Failed to update rate sets in kernel module [ 199.687566] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Using interface wlan0 with hwaddr 00:0e:8e:38:29:e6 and ssid 'test_wifi_2' Eventhough I am getting this error log from user space application(hostapd) code, my wifi device is working fine. But I want to remove this error log and want to know the root cause this error log. Please let me know the approach to solve this issue. Thanks, Amit Gupta