I filed an issue with details here:
I’m looking for some volunteers that would like to disable zeroconf as I did, to gather feedback here.
I’m running some systems where I disabled zeroconf and I didn’t find problems.
To disable:
echo "NOZEROCONF=yes" >> /etc/sysconfig/network
systemctl restart network
You will experience a brief network outage while network restarts.
I’ve had the following set up since I moved to 7.4 and probably much earlier:
[root@Nethserver ~]# cat /etc/e-smith/templates-custom/etc/sysconfig/network/50nozeroconf
NOZEROCONF=yes
[root@Nethserver ~]#
Cheers.
It was a good idea! Why you didn’t share it here 
?
It was so long ago, I can’t remember what issue I had that this solved and whatever it was I didn’t find searching here, or I would have added to any previous posting.
Not all of my “tweaks” are suitable for the community. 
Cheers.