I just add a new child domain to my parente domain.
But I have some dns issues.
In parent domain my child domain delegation appears grey in dns zone. (see greydns.jpg)
If I delete the child domain delegation and delegate again, I get this erros (see name-server-record01 and name-server-record02)
The parent domain and child domain are connected trought a vpn.
I use windows server 2008 R2 in both servers