Symptoms: Mounting remote vSAN Datastore gives an error "Failed to run the remote datastore mount pre-checks" in 'Mount remote vSAN datastore' workflow or calling vSphere vSAN API RemoteVcMountPrecheck.
Issue happens when:
The version of host in the client cluster is one of impacted ESXi versions.
IPv6 is disabled on the host.
Environment
VMware vSphere ESXi 7.0.2
Resolution
Upgrade vCenter/ESXi to 7.0U2c or higher
Workaround: To workaround this issue, enable IPv6 on the ESXi host.