Re: [Bluez-users] Bluez NAP refuses connection if PANU clent has deleted pairing.

[Marcel Holtmann <marcel@holtmann.org>]

Hi Alec,

> I am using openslug 2.7 linux on Linksys NSLU2 server to create a 
> Bluetooth NAP.
> 
> The packages are a bit out of date but they are the latest available for 
> the NSLU2.
> 
> bluez-utils-nodbus - 2.21-r0 -
> kernel-module-bluetooth - 2.6.12.2-r17.4 -
> libbluetooth1 - 2.21-r0 -
> 
> The NAP works perfectly allowing clients to connect, enter the PIN and 
> gain internet access via tle Bluez NAP.  Once clients have paired once 
> they can re-connect without a PIN.
> 
> The problem I get is if a client deletes its pairing but the server 
> still has its pairing in /var/lib/bluetooth/{ADDR}/linkkeys.  Under 
> these circumstances the client is refused access until I delete the 
> pairing on the server - at which point the client is prompted to re-pair 
> and everything then works fine again.
> 
> I assumed there was some combination of settings in hcid.conf that would 
> overcome this (pairing multi looked promising! but made no difference) 
> and I have tried every variation of  settings I can think of. 

you are in security mode 3 (auth and encrypt enabled). Don't do this.
Simply start pand with -A and -E options. You should also update your
bluez-utils to the latest version, because the handling of the link keys
might contain a bug and this is the reason why you see this issue.

Regards

Marcel




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