Filebeat DNS lookup failure after upgrading coreDNS

I was upgrading the EKS version to 1.15 and after I upgrade the coreDNS version to 1.6.6. I got an error log from the filebeat

2020-06-20T20:00:43.298Z	WARN	transport/tcp.go:53	DNS lookup failure "logstash-collection-headless.etl.svc.cluster.local": lookup logstash-collection-headless.etl.svc.cluster.local: no such host
2020-06-20T20:00:44.299Z	ERROR	pipeline/output.go:121	Failed to publish events: lookup logstash-collection-headless.etl.svc.cluster.local: no such host
2020-06-20T20:00:44.299Z	INFO	pipeline/output.go:95	Connecting to backoff(tcp://logstash-collection-headless.etl.svc.cluster.local:5044)
2020-06-20T20:00:44.340Z	INFO	pipeline/output.go:105	Connection to backoff(tcp://logstash-collection-headless.etl.svc.cluster.local:5044) established

What might be causing this error. Any other application can easily ping to the logstash application
The configuration for filebeat is

path.data: /usr/local/httpd/logs/filebeat-data
filebeat.inputs:
- type: log
  paths:
    - /usr/local/httpd/logs/fragment.log*
  close_inactive: 1h
  close_renamed: false
  close_removed: false
  fields:
    log_type: fragment
  fields_under_root: true

logging.level: info
logging.to_files: true
logging.files:
  path: /var/log/filebeat
  name: filebeat
  keepfiles: 7
  permissions: 0644

output.logstash:
  hosts: [ "${LOGSTASH_URL}" ]
  ttl: 1s
  pipelining: 0

processors:
- drop_fields:
    fields: ["beat", "host", "input", "prospector"]

xpack.monitoring:
  enabled: true
  elasticsearch:
    hosts: ["${ELASTICSEARCH_URL}"]
    protocol: "http"

name: ${NODE_NAME}

Environment for filebeat

env:
          - name: "LOGSTASH_URL"
            value: "logstash-collection-headless.etl.svc.cluster.local:5044"

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