Comment # 5 on bug 1114673 from Stefan Schubert

Hm, I have tested it with sles12-sp1 too and there it is working. The only
difference here is that we have interface eth0. 
I can reproduce that bug with TW AND the latest packages of master. It seems
that ens? is every time assigned to the defined default zone and not by the
manual selected zone in the UI.