Acronis Backup Cloud: recovery hangs when recovering XenServer 7.1 or 7.2 virtual machines from Cloud storage

Symptoms

1. You attempt to recover a virtual machine on Citrix XenServer 7.1 or 7.2 using bootable media or via Recovery option in backup console. Backup is located in Acronis Cloud storage.
2. Recovery from Cloud Storage hangs and does not continue.
3. After media hangs, network on VM is disconnected (e.g. you are unable to connect to the machine via SSH or you can see network disconnect in system information collected from Acronis bootable media)

Cause