We have a Security concern: In same datacenter, if other droplets have “promiscuous mode” enabled, can they listen to my packets going through my VPC private network ??

1. If Yes they can listen, then I will encrypt all packets even in my VPC private network.
2. If No they cannot listen in “promiscuous mode”, then I will trust digital ocean VPC private networking and avoid encrypting through my private VPC network. As this is serious security concern, pls explain in brief how do you stop other droplets listening to my private networking packets using “promiscuous mode”