Bringing back tcp wrappers

[Colin Watson]

On Wed, Jun 23, 2021 at 12:48:15PM -0500, Ben Lindstrom wrote:
> Libwrap has never been part of OpenSSH (or if it was it was removed when
> OpenBSD team forked the original SSHv1 source back in 1999).  This has
> always been a 3rd party patchset.

This is incorrect: the supporting code was in upstream OpenSSH (provided
you compiled with -DLIBWRAP, or used the portable configure script)
until
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshd.c.diff?r1=1.420&r2=1.421,
and https://www.openssh.com/txt/release-6.7 logs the removal of the
feature.

-- 
Colin Watson (he/him)                              [cjwatson at debian.org]