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From: Brian Candler <B.Candler@pobox.com>
To: Jon Otterholm <jon.otterholm@ide.resurscentrum.se>
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Cc: freebsd-net@freebsd.org
Subject: Re: arp-proxy
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On Mon, Nov 21, 2005 at 01:45:44PM +0100, Jon Otterholm wrote:
> The reason why I have to proxy-arp mac between VLANs is that one mac
> cannot end up mapped to more than one port in the switches FDB. If they
> do - we get something called "host-flapping" on IOS-language.

Or put it another way - Cisco haven't properly virtualised their VLANs so
that they have separate forwarding tables.