netdev - Re: SOCK_RAW does not receive broadcast (with VLAN unless PROMISC)

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Message-ID: <4A2E4077.8080407@trash.net>
Date:	Tue, 09 Jun 2009 12:59:03 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	David Miller <davem@...emloft.net>
CC:	gil.beniamini@...il.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: SOCK_RAW does not receive broadcast (with VLAN unless PROMISC)

David Miller wrote:
> From: Gil Beniamini <gil.beniamini@...il.com>
> Date: Mon, 8 Jun 2009 21:05:25 +0300
> 
>> My application is using PF_PACKET and SOCK_RAW in order to receive all
>> Ethernet packets for the machine-unicast MAC plus all broadcast
>> packets (like ARP broadcast).
> 
>> That worked OK with kernel 2.6.20 (Ubuntu 7.04 with or without VLAN).
>>
>> Now with kernel 2.6.28 (Ubuntu 9.04) it works OK only without-VLAN,
>> but with VLAN the application receive only packets for the
>> machine-unicast MAC, but no broadcast (like ARP broadcast) packets,
>> only if I set the socket to PROMISC mode, I start receive also
>> broadcast packets.

Which driver are you using? Are you sniffing on the VLAN device
or on the underlying device?

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