From owner-freebsd-net@freebsd.org  Fri Apr 28 12:13:33 2017
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Date: Fri, 28 Apr 2017 15:13:23 +0300
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Brooks Davis <brooks@freebsd.org>
Cc: freebsd-net@freebsd.org, freebsd-atm@freebsd.org
Subject: Re: The fate of ngatm
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On Thu, Apr 27, 2017 at 06:00:29PM +0000, Brooks Davis wrote:

> As previous threatened, I've removed support for NATM (as well as a
> remarkable number of remnants of the old ATM framework).  One piece
> that still remains is the ngatm framework in netgraph.  This includes
> the ng_ccatm(4), ng_sscfu(4), ng_sscop(4), and ng_uni(4) nodes.
> 
> These don't attach to physical interfaces and didn't depend on the NATM
> interface code so I left them alone in the first cut.  My question
> is, are they useful without physical interfaces?  If so, keeping them
> doesn't appear to have a high support burden.  If not, we should remove
> them.

may be it can be used together w/ USB ADSL modem?
Not sure about suported and existeing modern ADSL USB modem.