Running Cumulus VX 3.3.2 on a Ubuntu 14.04 server install.
Virtualbox is installed. Worked through the demos in the Intro to Cumulus VX Lab guide and wanted to try something bigger.
Followed the instructions at https://docs.cumulusnetworks.com/pages/viewpage.action?pageId=5126706
ping from leaf 1 to other VM's isn't successful.
Happy to provide additional info if required, just not sure what.