The license server is reaching out to Google NTP time.google.com regardless if t's an offline or online environment.
9.1
Built in feature.
Issue has been acknowledged by the VMware by Broadcom Engineering Team, and is addressed in Build 9.1.0.0200
https://techdocs.broadcom.com/us/en/vmware-cis/vcf/vcf-9-0-and-later/9-1/release-notes/patch-releases-9-1-0-x/vcf-installer/sddc-manager-9-1-0-0200-release-notes.html