On Wed, Dec 09, 2020 at 03:29:39PM +0000, Wall, Stephen wrote:
> Regarding FreeBSD-SA-20:32.rtsold, does this line indicate that the messages 
> must come from directly connected equipment, or could it come through a hub 
> or router as well?
> 
> > Note that rtsold(8) only processes messages received from hosts attached to 
> > the same physical link as the interface(s) on which rtsold(8) is listening.

The message has to come from a host on the same layer 2 broadcast domain
as the recipient.  Routers don't forward neighbour solicitation messages
but a hub will.

> 
> Thank you.​
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