Having this same problem and hoping for a little help, please.
Company is rolling out vSphere 6.5 in January, and have built out a home lab. Successfully have VCSA, two Hosts in a cluster, and a VM running Ubuntu.
vMotion, HA, DRS are all enabled, have a shared iSCSI storage (OpenFiler) but when attempting to migrate the VM between Hosts the selection displays ONLY the Host being migrated from?
Being a relative Newb to networking--can someone please point me to what is missing?