Can't disable Ansible's host key checking

Question

I\'m using Ansible 1.5.4 to provision my Vagrant 1.4.3 box on Ubuntu 14.04 LTS.

I\'m getting the following error message in verbose mode:

Answer 1

Probably not your problem, but worth a shot: I was stalled on this, until I realized I added

host_key_checking = False

under a session that was not [defaults]. Once I actually moved it to under [defaults], changed host keys did not stop anything anymore.