Strange ansible hangs at the setup stage

Hello. Please advise me in the next problem. Environment:

Ansible host: CentOS 6.5 x86_64. Rpm package ansible 1.6.6.

I created a task to disable ipv6 on target host. Let’s name this host: myhost. I created task file: disable-ipv6.yml. Contents:

Can you please upgrade to the latest version of Ansible and try from there? This is version 1.7.

What remote OS are you managing?

Can you run with “-c ssh -vvvv” and see if you get any particular messages from SSH debugging?