# host -t a mydom.private
mydom.private has address 10.61.15.8
mydom.private has address 10.61.16.8
mydom.private has address 10.61.17.8
# host -t ns aveanet.private
mydom.private name server dc1.mydom.private.
while dc1.mydom.private is okay to be the only one in the SOA record, the NS record of the domain should list all DCs and it looks like we are just missing to add the NS records for the additionally joined DCs.
*** This bug has been marked as a duplicate of bug 10810 ***