Re: [Bluez-devel] PAN and bridge problem when bnep0 disconnects before bnep1

[Marcel Holtmann <marcel@holtmann.org>]

Hi Matthias,

> I have a BlueZ NAP setup with bridging (essentially following the PAN
> HOWTO), which works quite nicely (thanks to all developers :) except
> when the first connected bnep0 client is killed before the 2nd client
> (bnep1).
> 
> I am running a DHCP server on the server's bridge (pan0), and eth0 is
> NOT part of the bridge, I use IP forwarding instead.
> 
> The problem is, that after bnep0 is removed (by killing it on the
> respective client with 'pand -K'), bnep1 doesn't 'work' any longer,
> meaning ping etc. don't work any more. And I couldn't find anything in
> the syslogs, except that after a while the client's DHCP client starts
> to issue DHCPDISCOVERs.
> 
> ifdown/ifup on bnep1 don't seem to help either, the only way I could
> find to make it work again was to issue 'pand -K' on the server and
> reconnect the clients.
> 
> If bnep1 disconnects before bnep0, no problem.
> 
> I'm using quite late BlueZ versions on all machines (at least kernel
> 2.6.5-mh3 and the latest Debian bluez-utils 2.6-1 and bluez-pan
> 1.1rel-4), and I can reproduce the behaviour also with a Windows client
> on bnep0.

sounds like a bridge problem to me. Are you sure that your bridge is
setup correctly. Take a look at the bridge howto's.

Regards

Marcel




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