As per best of my understanding, CNAME can't exist with any other RR in DNS Server. I am using BIND 9.9.5.
Now when i am adding CNAME record with a domain which already has NS Records, i am not getting any warning or error while checking zone with named-checkzone utility.
Also i restarted my named process and it doesn't give me any warning for the same while restarting the process.
I am wondering what's wrong. Do DNS bind program not suppose to give warning for CNAME stuff ?