A fix has been committed upstream: https://github.com/hashicorp/vagrant/commit/20ccf46
- Bug#946837: vagrant: Does not work with virtualbox 6.1 fr... Guillem Jover
- Bug#946837: vagrant: Does not work with virtualbox 6... Jeremy L. Gaddis
A fix has been committed upstream: https://github.com/hashicorp/vagrant/commit/20ccf46