Several reports on the web say that this issue is fixed by installing Vagrant 2.0.3, from upstream's own .deb package: https://github.com/dotless-de/vagrant-vbguest/issues/292 https://github.com/devopsgroup-io/vagrant-hostmanager/issues/256
And indeed that worked for me just now on buster, after I'd gotten this issue on vagrant 2.0.2+dfsg-3 . I don't see anything in upstream's changelog for 2.0.3 that looks like a fix: https://github.com/hashicorp/vagrant/blob/master/CHANGELOG.md#203-march-15-2018 but *shrug*; empirically the fix is there. (Upstream seems to make a release every month or so, so that's no longer the latest; they're up to 2.1.2.) Cheers, Greg
