[Bug 779] Netfilter on bridge interface containing a defective NIC

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Thu Jul 11 23:25:20 CEST 2013


--- Comment #3 from calebc2099 at yahoo.com 2013-07-11 23:25:20 CEST ---
(In reply to comment #1)
> I am unable to replicate this issue on a 3.10 kernel.  Perhaps the "defect in
> the NIC" you describe is actually responsible for the corrupt packets you are
> seeing?  
> Have you tested this on a recent kernel?

Have you tried to replicate the problem with a defective NIC?  Here is an
example of how to replicate the problem:

eth0 is okay
eth1 is okay
eth2 has a defect that requires rx offload to be disabled.

bridge eth1 and eth2 as br0 and then arrange computers/interfaces for testing
eg. one computer connected via each physical ethernet port.

observe simple ping traffic between:
 1) computer attached to eth0 and computer attached to eth1.
 2) computer attached to eth0 and computer attached to eth2.

enable netfilter (eg. use SNAT) & change IP addresses of computers as necessary
and repeat above observation.

I last tried with Kernel 3.3.5

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