It is slightly curious. Certainly, you are sending requests is teredo.ipv6.microsoft.com (18.104.22.168) which is outbound from you on port 64527, so that is likely the return endpoint.
When I use uTorrent with Ipv6 the connections are made on my designated uTorrent port, but then I don't use teredo, so there may be some difference there.
You could try a quick experiment, just disable teredo for a short time and note any differences, then re-enable. To disable, open a command prompt:
netsh interface teredo set state disabled
netsh interface teredo set state client