samba - Sep 2016 - Share 'IPC$' has wide links and unix extensions enabled

We are running Samba 4.4.6 as a file server.
In the logs for a few client machines I see entries such as:

[2016/09/29 22:36:58.862575,  0]
    ../source3/param/loadparm.c:4402(widelinks_warning)
  Share 'IPC$' has wide links and unix extensions enabled. These
  parameters are incompatible. Wide links will be disabled for this share.

I assume that Share 'IPC$' is some sort of automatically created share
as we define no such share. We do have wide links enabled globally but
we do not have unix extensions enabled anywhere. I assume that this
message is harmless, but I am wondering where it comes from.

Tom Schulz
Applied Dynamics Intl.
schulz at adi.com

On Fri, 30 Sep 2016 10:14:32 -0400 (EDT)
Thomas Schulz via samba <samba at lists.samba.org> wrote:
> We are running Samba 4.4.6 as a file server.
> In the logs for a few client machines I see entries such as:
> 
> [2016/09/29 22:36:58.862575,  0]
>     ../source3/param/loadparm.c:4402(widelinks_warning)
>   Share 'IPC$' has wide links and unix extensions enabled. These
>   parameters are incompatible. Wide links will be disabled for this
> share.
> 
> I assume that Share 'IPC$' is some sort of automatically created
share
> as we define no such share. We do have wide links enabled globally but
> we do not have unix extensions enabled anywhere. I assume that this
> message is harmless, but I am wondering where it comes from.
> 
> Tom Schulz
> Applied Dynamics Intl.
> schulz at adi.com
> 
It is set automatically, try reading 'man smb.conf'

Rowland