Re: proxy_arp bug? [was Re: autorouting problem]

kuznet@ms2.inr.ac.ru
Mon, 23 Aug 1999 23:05:54 +0400 (MSK DST)


Hello!

> What kind of duplicate address detection do you mean? Windows95 (and
> it seems that NT too) does an ARP for its own address as duplicate
> address detection and Linux will happily answer to that if it's
> incorrectly configured and has proxy arp enabled.

As specified in rfc-2131.

The thing, which Win95/NT do, is called "unsolicited" or "gratuitous" ARP.
It updates ARP caches on all the hosts and if address is really
duplicate, kills real owner of this address. And commits suicide then 8)8)8)
It is very bad bug and practically impossible to workaround.

Alexey

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