Subject: Mesh addressing issue
Date: Tue, 14 Aug 2012 18:25:44 +0200
Message-ID: <773DB8A82AB6A046AE0195C68612A3190138F360@sbs2003.acksys.local> (sfid-20120814_182424_876013_E9D35A46)
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From: "Cedric VONCKEN" <cedric.voncken@acksys.fr>
To: <linux-wireless@vger.kernel.org>
Sender: linux-wireless-owner@vger.kernel.org

??????????????? Dear all, 

I think I found an issue in mesh addressing. 
I used the compat-2012-06-14.

My network topology for the test is :
-----------------   ?? -------------------?? Wired LAN?????  -----------------
|MP1???????       |?  |MP2????         ????? |------------------| Computer ??   |
|192.168.4.1|??  |192.168.4.253|??????????????         ?? ? |192.168.4.90 |
-----------------  ?? -------------------????? ??       ?????????       ---------------

The MP1 is not bridged with any wired interface (The ip address is set directly on WLAN0 interface)
The MP2 is bridged with eth0 to offer link with a wired network (My computer is connected with the wired network).

If I try to ping from Computer to MP1.
      The ICMP request sent on WiFi (from MP2 to MP1) is a broadcast frame using a strange address format (3 address in 802.11 header + 1 address in mesh extension) . 
      The ICMP reply sent on wifi (from MP1 to MP2) is unicast frame using 6 addresses format.

Why the ICMP request is sent with address 1 set to broadcast (It was not the case for older compat-2011-08-25)?

If in MP1 I move the WLAN0 to a bridge with brctl (with no other interface), ICMP request are still sent with broadcast,
But 
?If I change the mac address of bridge interface, the ICMP request is now sent in unicast ?format (using the 6 addresses formats) !

Best regards

Cedric Voncken