Vagrant Up Issue - Port Collision

Got this going on:

xxxxx@xxxxx:~/msw$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
[default] Clearing any previously set forwarded ports...
Vagrant cannot forward the specified ports on this VM, since they
would collide with some other application that is already listening
on these ports. The forwarded port to 27017 is already in use
on the host machine.

To fix this, modify your current projects Vagrantfile to use another
port. Example, where '1234' would be replaced by a unique host port:

  config.vm.network :forwarded_port, guest: 27017, host: 1234

Sometimes, Vagrant will attempt to auto-correct this for you. In this
case, Vagrant was unable to. This is usually because the guest machine
is in a state which doesn't allow modifying port forwarding.

Thoughts? Do I need to modify the Vagrantfile?

ptwobrussell / Mining-the-Social-Web-2nd-Edition

Vagrant Up Issue - Port Collision #211