GNU netcat in make tests

[Nico Kadel-Garcia]

On Thu, Jul 24, 2014 at 5:54 AM, Damien Miller <djm at mindrot.org> wrote:
> On Thu, 24 Jul 2014, Christian Hesse wrote:
>
>> Hello everybody,
>>
>> regression tests do use `nc -U` since commit 0e4e955 to test for Unix domain
>> socket forwarding. This fails on systems that have GNU netcat installed as
>> that does not support Unix domain sockets. In fact it does not understand the
>> `-U` option at all. What way to go there?
>
> Despatch some time-travelling robot assassins to ensure that GNU
> netcat was never created?
>
> In the meantime, maybe we could avoid the use of GNU netcat althother
> by using a ssh-agent's socket in the tests...

Or submit a patch.  Looks like the original GNU version is at
netcat.sourceforge.net.

Is the '-U' option added by BSD, to the original 1.10 release by
Hobbit, or left out by the GNU version?