no more gtk rekeying after local deauth request (hostapd-wpa_supplicant)

Jouni Malinen jkmaline at
Sun Nov 6 14:51:55 EST 2005

On Fri, Nov 04, 2005 at 03:07:17AM +0100, thomas schorpp wrote:
> > On Wed, Aug 31, 2005 at 11:54:17PM +0200, thomas schorpp wrote:
> >>strange: if a linux wpasuppl. rsn client joins the net no more group key
> >>handshakes with this xp client with latest hostapd...?
> >>-> maybe security issue / policy violation

> -no more gtk rekeying until wpasupplicant restart.

> ok. i do it next, this is a security issue. windows+mac rsn clients not
>  involved and rekeying normal with hostapd.

I'm trying to remember what was the exact issue. Could you please give a
short summary of what the problems you have seen are?

If I understood correctly, you are using madwifi+hostapd as the AP and
have both Linux (madwifi+wpa_supplicant) and Windows/MAC clients using

Are you saying that hostapd stops rekeying group keys when both Linux
and Windows/MAC clients are associated, but this does not happen if
either only the Linux client associates or only Windows/MAC clients
associate? Or is rekeying only stopped for one of the clients and the
other clients continue getting new group keys?

Jouni Malinen                                            PGP id EFC895FA

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