Proxy ARP detection

Clay Fiske clay at
Thu Jan 16 00:24:19 UTC 2014

On Jan 15, 2014, at 4:03 PM, Niels Bakker <niels=nanog at> wrote:

> * clay at (Clay Fiske) [Thu 16 Jan 2014, 00:59 CET]:
>> This is where theory diverges nicely from practice. In some cases the offender broadcast his reply, and guess what else? A lot of routers listen to unsolicited ARP replies.
> I've never seen this.  Please name vendor and product, if only so other subscribers to this list can avoid doing business with them.

This was some time ago, but the two I was able to dig up from that case were both Junipers. Perhaps it’s something that only happens when proxy ARP is enabled?


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