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* atl1e Ethernet driver not seeing packets sent to 33:33:00:00:00:01 multicast
@ 2008-11-11 13:31 David Madore
  2008-11-11 14:06 ` J. K. Cliburn
  0 siblings, 1 reply; 6+ messages in thread
From: David Madore @ 2008-11-11 13:31 UTC (permalink / raw)
  To: Linux Kernel Mailing-List, Linux NetDev Mailing-List, atl1-devel

Hi,

This is on Ubuntu 8.10 "Intrepid Ibex" using its stock kernel
(2.6.27-7.16), with an Eee PC 901 whose Ethernet adapter is (according
to lspci):

04:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter (rev b0)

using driver atl1e of said kernel.

_Unless_ the network device is put in promiscuous mode (e.g., by
running tcpdump), it does not see packets sent to Ethernet multicast
address 33:33:00:00:00:01.  E.g., IPv6 packets to ff02::1
(ip6-allnodes) are not seen.

Practical consequence: IPv6 is broken, because router advertisements
are not received.

("ip maddr show" does give "link  33:33:00:00:00:01" among the
subscribed multicast addresses, so it's not a config problem.)

Is this a known problem?  Is there a patch fixing it?

Until then, a workaround is to put the device in promiscuous mode.

Happy hacking,

-- 
     David A. Madore
    (david.madore@ens.fr,
     http://www.madore.org/~david/ )

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2008-11-12  0:13 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-11-11 13:31 atl1e Ethernet driver not seeing packets sent to 33:33:00:00:00:01 multicast David Madore
2008-11-11 14:06 ` J. K. Cliburn
2008-11-11 15:59   ` David Madore
2008-11-11 16:08     ` J. K. Cliburn
2008-11-11 22:00       ` David Madore
2008-11-12  0:13         ` J. K. Cliburn

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