Re: BUG: Network: Duplicate MAC adress response in multihomed system : All Kernels

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Lehner Franz wrote:
>
> take a linux, configure this kind
>
> eth0: 192.168.10.200 / 255.255.255.0
> eth1: 192.168.10.201 / 255.255.255.0
>
> Both Interfaces are "real ethernet cards" and are connected to same
> switch
>
> if you take now a 3'rd machine, and do a
>
> arping  -c 1 192.168.10.200
>
> 60 bytes from 00:0c:29:bc:96:fe ( 192.168.10.200): index=0 time=645.876
> 60 bytes from 00:0c:29:bc:96:f4 ( 192.168.10.200): index=1 time=1.472
>
> arping  -c 1 192.168.10.201
>
> 60 bytes from 00:0c:29:bc:96:fe (192.168.10.201 ): index=0 time=833.988
> 60 bytes from 00:0c:29:bc:96:f4 (192.168.10.201): index=1 time=1.211
>
> in fact, this is "****" as arp table of switches and other machines
> are not knowing what to do

By aging the entry, arp tables should be ok.

But I agree that the default is non-intuitive, and cause for un-intended 
insecure connections.


Thanks!

--
Al

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