netdev - Re: [PATCH v2 net-next 0/6] Allow bridge to function in non-promisc mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 02 May 2013 13:41:05 -0400
From:	Vlad Yasevich <vyasevic@...hat.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
CC:	netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
	mst@...hat.com
Subject: Re: [PATCH v2 net-next 0/6] Allow bridge to function in non-promisc
 mode

On 05/02/2013 01:23 PM, Stephen Hemminger wrote:
> Doing research on another problem, I noticed that this would
> break user mode spanning tree (RSTP) code.
>
> The daemon assumes that bridge is promicious mode and therefore
> will receive all link-level multicast packets.
>

Just took another look at RSTP code and I see that's its using
a packet socket with filter to catch STP frames.

Would setting IFF_ALL_MULTI solve the problem?  STP packets
are all multicast.

Thanks
-vlad

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html