Messages in this thread | | | Date | Tue, 11 Nov 2008 14:31:08 +0100 | From | David Madore <> | Subject | atl1e Ethernet driver not seeing packets sent to 33:33:00:00:00:01 multicast |
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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/ )
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