@MillerT, I encountered the same problems with VirtualBox. I investigated a bit, I think it’s a limitation of the CentOS network startup scripts when dealing with DHCP.
I “fix” the problem with two simple commands:
db networks setprop enp0s8 role green ipaddr 192.168.56.71 netmask 255.255.255.0
signal-event interface-update
where enp0s8 is the host only adapter.
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