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Subject: Re: [Bluez-users] Setting up an hotplug connection with USB dongles
From: Erwin Authried <eauth@softsys.co.at>
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Date: Mon, 29 Nov 2004 16:05:00 +0100

Am Son, den 28.11.2004 schrieb Rainer Dorsch um 21:32:
> Hello,
> 
> I am wondering, if there is a way to setup a hotplug connection between two 
> Linux machines using two bluetooth dongles. One of them is a NAP (with 
> Internet access) and booted first, the other box a PANU.
> 
> My problem is that I need the pand running on both sides first before I can do 
> an ifconfig for the bnep0 interface on the NAP.
> 
> 
> 
> What I did on both Debian Linux systems is:
> 
> Add a file
> 
> /etc/hotplug/usb/libbt.usermap
> 
> The file contains a line for an epox DG02A dongle
> 
> epoxbt                0x0003 0x0a12   0x0001    0x0000       0x0000       0x00         
> 0x00            0x00            0x00            0x00            0x00            
> 0x00000000
> 
> with the vendor ID (here 0x0a12) and the product ID (here 0x0001).
> 
> Then add the script epoxbt to the same directory:
> 
> # cat epoxbt
> echo "Load epox bluetooth dongle..."
> 
> modprobe bnep
> pand --master --listen --role NAP
> #
> 
> and 
> 
> topsi:~# cat /etc/hotplug/usb/epoxbt
> #!/bin/bash
> 
> echo "Load epox bluetooth dongle..."
> modprobe bnep
> pand --role PANU --connect <BT-ID>
> topsi:~#
> 
> 
> Then I do on the NAP an 
> 
> # ifconfig 192.128.2.1
> 
> and on the PANU
> 
> # dhclient
> 
> This works fine, I can access the Internet from the PANU.
> 
> 
> The problem is that the ifconfig on the NAP fails when I do not have the PANU 
> connected before....thus I can't add the network configuration part into the 
> expobt scripts.
> 
> Does anyone have an idea or pointer for that problem.
> 
> Thanks,
> Rainer

Hi,
here is a nice description for Debian:

http://quozl.netrek.org/bluetooth/

the interfaces aren't brought up directly by ifconfig, but by a "dev-up"
script in /etc/bluetooth/pan. In addition, the "-persist" option for
pand may be useful to keep the connection up. 

-Erwin



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