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From: Randy Bush <randy@psg.com>
To: sthaug@nethelp.no
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Cc: freebsd-net@freebsd.org
Subject: Re: Hi. /31 on ethernet links
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> No, Cisco does not *support* it. They make it available, which is a
> completely different story.
> 
> We have asked Cisco repeatedly, through official channels, whether
> they *support* /31 on Ethernet links. The answer is always that it
> *may* work, use at your own peril.

i have managed O(10^3) ciscos in isp backbone(s).  /31s predominate for
ether links in that space.  though i suspect there is more multipoint in
the enterprise space.

we need to be able to use /31s and /127s on freebsd if it is to be used
in the routing space.

randy