Known Issue: DNS Express may incorrectly include the NS resource records for the parent zone in response to a CNAME query

(SOL13756) Description DNS Express may incorrectly include the NS resource records (RR) for the parent zone in response to a query for a CNAME record that references a child domain. This issue occurs when the following conditions are met: The BIG-IP configuration contains at least one DNS Express zone. The DNS Express zone contains a CNAME RR and NS RR that reference a child domain. An LDNS server queries the DNS express zone for a CNAME RR. For example, when an LDNS requests a CNAME record that targets