[Bridge] NTP packets not passing the bridge

Stephen Hemminger shemminger at linux-foundation.org
Tue Feb 16 08:31:05 PST 2010


On Tue, 16 Feb 2010 11:58:26 +0100
Martin Andersson Z <martin.z.andersson at ericsson.com> wrote:

> Hello.
> 
> I have a simple testsetup, where <node> --- | bridge | --- <node> is connected.
> 
> Every packets seems to traverse the bridge, except for the NTP packets.
> 
> When capturing on the in-port, what differes for this NTP packets is that there src-mac address is 00:00:00:00:00:00.
> Where any other packets has valid src address.
> 
> Is there a check/validation in the bridge so that it will not pass eth-packets that has a src with all 0.
> 
Yes.  all-zeros is not a valid ethernet device address.
Find and fix the hardware that is sending it.

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