Did you double-check the port forward rules? It should look something like this: 

```
 >> vboxmanage list natnets
NetworkName:    NatNetwork
IP:             10.10.10.1
Network:        10.10.10.0/24
IPv6 Enabled:   Yes
IPv6 Prefix:    fd17:625c:f037:2::/64
DHCP Enabled:   No
Enabled:        Yes
Port-forwarding (ipv4)
        StarlingX-controller-0:tcp:[]:3122:[10.10.10.3]:22
        StarlingX-horizon-dashbord:tcp:[]:8080:[10.10.10.3]:8080
        StarlingXpenstack-kubernetes-dasboard:tcp:[]:32000:[10.10.10.3]:32000
loopback mappings (ipv4)
        127.0.0.1=2

```