So I have a child domain and I can not ping a machine from the the parent domain with out putting in the FQDN.
and nslookup will not work unless I do the same.
So I'm thinking a DNS issue. if I add the child domain name in the network properties of my machine I can ping and nslookup
when I run dcdiag /e /test:dns from parent domain controller I get this
at the bottome