Hmmm. I don’t have as much experience with the ZME for Android as @ekoby does. When you say it’s completely lost, do you mean you are no longer able to access IPv6 resources or that your phone is no longer able to be contacted by other devices (as though your phone is working as a server), or something else?
What symptom did you notice to make you wonder what your IPv6 IP was? Are you losing functionality somehow?