hostapd terminates with WPA HT/VHT configuration

Jouni Malinen j at
Tue Feb 6 00:45:10 PST 2018

On Mon, Feb 05, 2018 at 04:04:31PM -0800, Ann Lo wrote:
> When we configure hostapd v2.6 with 802.11ac, 802.11n using channel
> 161, 20 MHz, and WPA AES security, hostapd v2.6 is able to come up
> fine.
> If we increase channel width to 40 MHz or 80MHz, hostapd terminates
> with the log:
> "Could not set channel for kernel driver".
> Would you advise how hostapd deals with such configurations? If WPA is
> not supposed to be used for 802.11ac and 802.11n, why is channel width
> 20 MHz OK?
> If we use the same configurations except that WPA (wpa=1) is replaced
> by WPA2 (wpa=2), then all configurations work fine.

There should be no difference to channel configuration between wpa=1 and
wpa=2. Could you please post the two configuration files you used and
hostapd debug log (-dd on command line) from these working (wpa=1) and
not-working (wpa=2) cases?

Jouni Malinen                                            PGP id EFC895FA

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