Shorthand of statefulset pod FQDN (quickstart-es-master-0.quickstart-es-master.elastic-system.svc) is not getting resolved

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Hi Team,

I am facing the below issue -

FQDN - quickstart-es-master-0.quickstart-es-master.elastic-system.svc - is not getting resolved

FQDNS - quickstart-es-master-0.quickstart-es-master.elastic-system.svc.cluster.local is getting resolved

I am deploying the elastic search cluster and using the operator, statefulset for elasticsearch cluster but master pod is failing by the error quickstart-es-master-0.quickstart-es-master.elastic-system.svc temporary failure of name resolution.

what could be the issue i am using kube-flannel as cni.