From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: Re: [RFC 0/1] Appletalk AARP probe broken by receipt of own broadcasts. Date: Sun, 19 Aug 2018 16:41:07 +0200 Message-ID: <20180819144107.GA23981@lunn.ch> References: <20180819010739.26975-1-slapdau@gmail.com> <20180819013244.GA8950@lunn.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "David S. Miller" , netdev@vger.kernel.org, Craig McGeachie To: Craig McGeachie Return-path: Received: from vps0.lunn.ch ([185.16.172.187]:38467 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726411AbeHSRwz (ORCPT ); Sun, 19 Aug 2018 13:52:55 -0400 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: > I run inside Virtualbox with the Realtek PCIe GBE Family Controller. > > Assuming I'm reading /sys/class/net/enp0s3/driver correctly, it's using the > e1000 driver. Hi Craig Ah. And how do you connect to the network? Please run some tcpdumps and collect packets at various points. Make sure your network setup is not duplicating packets, in particular, any bridges you might have in order to connect the segments together. > However, it might not be the ethernet driver's fault. I've been a bit loose > with terminology. Appletalk AARP probe packets aren't ethernet broadcasts as > such; they're multicast packets, via the psnap driver, to hardware address > 09:00:07:ff:ff:ff. Basically, the same question applies for Multicast as for Broadcast. I'm pretty sure the interface should not receiver the packet it transmitted itself. But if something on the network has duplicated the packet, it will receiver the duplicate. So before we add a filter, lets understand where the packets are coming from. Andrew