@hikerguy maybe one more thing: upon simulation launch make sure to choose Management network: "Shared flat network" 

Hi @hikerguy , I've came to the same issue with connectivity. The secret is in Virl settings. Login as uwmadmin, go to the left panel: Virl Server->System configuration. You should see the management settings for simulated devices. By default it uses...

Thanks for suggestion to cancel the reservation and start new one. Your tip might be helpful. Actually I was about to use it but gave one more try to an already reserved sandbox and ... this time it worked. My observation is that this problem persist...