[RP-PPPoE] PPPoE relay - forwards unknown MAC address packets

mike mike at willitsonline.com
Fri Aug 6 11:42:01 EDT 2010


Ashmath Khan wrote:
> Hi,
>
> can somebody please reply ?
>
> thank you.
>
> On Tue, Aug 3, 2010 at 12:53 PM, Ashmath Khan <hashmat.email at gmail.com> wrote:
>   
>> Hi,
>>
>> I am seeing an issue with pppoe relay agent with forwarding packets
>> having unknown MAC address.
>> Say I have a device with eth0 and eth1 interface.
>> eth0 - client side (LAN)
>> eth1 - server side (WAN)
>>
>> After PPPoE session is established,
>> from eth1 send a PPPoE packet with unknown MAC address. Its seen that
>> the packet gets forwarded onto eth0 and received by the client on LAN
>> side.
>>
>> Is there a way PPPoE relay agent can filter these kind of packets with
>> unknown MAC address ?
>>
>> thanks
>> Hashmat
>>
>>     


So what you are saying is that you see stray packets comming from the 
wan side, which is being forwarded to the lan side then. Can you produce 
a tcpdump capture of the packets in question? Also can you show us your 
pppoe-relay configuration?

-ILC



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