>    Mike> FreeBSD seems to use arp -d -a.  Don't know if I like that,
>    Mike> but it's prior art.
>
>FWIW, in our own tree we also have the prior art of ndp -c.
>(Not that I'm suggesting using that option letter...)

all combinations are minorly arguable.  ndp sort of relates to arp,
but so does route, except we can't use -f and arp already uses -d for
something similar...

i think -d -a is a good answer.

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