[Bug 900] New: Bridging issue: IP packets with Multicast Ethernet Address

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Mon Feb 10 00:07:04 CET 2014


           Summary: Bridging issue: IP packets with Multicast Ethernet
           Product: netfilter/iptables
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: bridging
        AssignedTo: netfilter-buglog at lists.netfilter.org
        ReportedBy: sophal.lee at live.com
   Estimated Hours: 0.0

Non-IP multicast/broadcast Ethernet does get flooded in all bridge ports as
expected (e.g. ARP/NLB/STP all get through).

IP packets with multicast Ethernet address gets dropped instead of being
broadcast to all bridge ports. I've managed to work around problem by
forwarding IP to the broadcast address of ff:ff:ff:ff:ff:ff.

However, I think the bridging should determine whether IP packets is multicast
by looking the the LSB of the first octet and making bridging decisions

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