When doing a vagrant up I get:
vagrant up
Got different reports about installed GuestAdditions version: Virtualbox on your host claims: 5.0.28 VBoxService in
I had same issue on Ubuntu 18.04 with Virtualbox 5.2.18
Ubuntu 18.04
Virtualbox 5.2.18
Fix: add the following lines to your vagrant file.
if Vagrant.has_plugin?("vagrant-vbguest") config.vbguest.auto_update = false end
See this comment at github