When I start CDK 2.2, docker connection is correctly created, but it cannot connect. There is no error message anywhere.

If I try to create a connection manually, using details from "vagrant service-manager env", the ping fails and it doesn't work either.

Connection from CLI, on the other hand, to this docker daemon works fine - when I run the export commands:

export DOCKER_HOST=tcp://172.28.128.3:2376
export DOCKER_CERT_PATH=/Users/rasp/jbossqa/cdk2.2.rc1/cdk/components/rhel/rhel-ose/.vagrant/machines/default/virtualbox/docker
export DOCKER_TLS_VERIFY=1
export DOCKER_API_VERSION=1.22

and then try for example "docker ps" or "docker run hello-world".