Null function when scanning.

Jouni Malinen jkmaline
Wed Feb 9 19:22:09 PST 2005

On Wed, Feb 09, 2005 at 02:17:08PM -0500, Andrea G Forte wrote:

> I am wondering if you have any idea why when scanning, a few "Null 
> function (No Data)" packets are sent.

Normally, these frames are used to notify the current AP that the client
is moving to power save mode and the AP should buffer frames. This can
be used to avoid dropping packets when the station is scanning on
another channel.

Jouni Malinen                                            PGP id EFC895FA

More information about the Hostap mailing list