juju bootstrap localhost lxd-test ... Hangs until timeout

From page: https://jujucharms.com/docs/stable/getting-started

root@mcnode2:~# juju bootstrap localhost lxd-test
Creating Juju controller "lxd-test" on localhost/localhost
Looking for packaged Juju agent version 2.1.2 for amd64
To configure your system to better support LXD containers, please see: https://github.com/lxc/lxd/blob/master/doc/production-setup.md
Launching controller instance(s) on localhost/localhost...
Fetching Juju GUI 2.4.4
Waiting for address
## appears to be completely stuck here..

## Finally:
ERROR failed to bootstrap model: waited for 20m0s without getting any addresses

Any thoughts here? Thanks!