it seems to be working 'as written', grep is not finding the ip, so it returns rc=1 which ansible interprets as the task failing, you can use ignore_errors or failed_when to bypass this 'failure' as you just seem to care if the grep found something or not.
-- Brian Coca -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/CAJ5XC8muk8iD9tFj4fCuJjChZG7Fe8ps6ZfEi0MWoSfWmnfrBQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
