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    Subjectatl1e Ethernet driver not seeing packets sent to 33:33:00:00:00:01 multicast

    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
    (, )

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      Last update: 2008-11-11 14:33    [W:0.018 / U:27.100 seconds]
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