> Attached is a patch to passively detect duplicate IP conflicts. I sent it to
> l-k two weeks ago and got feedback from Rogier Wolff who seemed to like it.
Duplicate address detection does not work in this way.
Correct way is described f.e. in RFC-2131.
You will not find there explanation why your scheme is wrong,
but you may get this information from IPv6 addrconf.
Shortly: ARP packets with your IP source are legal and common phenomenon.
Even more: on switched networks you get you own packets back
in several exemplars frequently.
Alexey Kuznetsov
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