virtualbox.org

I have just got VirtualBox up and running on OS and have created 2 separate Ubuntu Linux VMs. Everyone is networking ok to the outside world, but I can't get the Linux VMs to talk to each other (I'm just trying to ssh for proof-of-concept). Here is the truth table:

OS X Host can ssh to linux1 and linux2
linux1 can ssh to OS X Host but not linux2 (No Route to Host)
linux2 can ssh to OS X Host but not linux1 (No Route to Host)

Everyone has a legitimate IP address that looks to have come from my router. My networking kung-fu is too weak here. Any ideas of how I can trouble shoot this?

Regards,
Bob

If you let it setup as default then you are using NAT and the guests will not see each other nor the host.
If you have a router then use Bridged mode or use host-only and add a second adapter set to NAT.
Read you VirtualBox users guide Chapter 6. Virtual networking for information.

I have a router and I am using Bridged mode, but only on Adapter2 (which is en:Airport). I wonder if somehow the default, NAT, Adapter 1 is screwing this up. How I do not know. OK, OK, RTFM.

Thanks
Bob