How to restart hostapd correctly

Jouni Malinen j
Mon Dec 28 11:56:55 PST 2009

On Mon, Dec 28, 2009 at 09:46:23PM +0200, Jar wrote:

> I am currently using hostapd-0.6.9 with prism 2.5 card. When I changed 
> the line 'wpa_pairwise=CCMP' to 'wpa_pairwise=CCMP TKIP' in the 
> hostapd.conf and then kill hostapd and start it again neither WPA/TKIP 
> nor WPA2/AES clients can connect. But if I reboot the whole PC all 
> clients can connect perfectly.

As far as hostapd is concerned, it should be enough to just kill the
process and start it again..

> My question is, how to re-start hostapd daemon correctly so that it 
> reads the changed .conf file so that clients could connect after that 
> change without rebooting.

This sounds like a driver issue to me.. You could try resetting the
driver with iwpriv command (iwpriv wlan0 reset 0; and if that is not
enough, change 0 to 1). Do this after having killed hostapd, but before
starting it again.

Jouni Malinen                                            PGP id EFC895FA

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