Wrong incoming port?

[msxcv]

Hello,

I'm having some weird issues with the incoming ports. I configured it to be a fixed one (64444) which seems to be working just fine. I'm downloading and uploading with no problem. My problem is even though I see connections made to port 64444 each couple of minutes I get incoming connections through svchost.exe and to a random port each time (only when utorrent is on, ofc). The fist time the firewall asked for utorrent permissions and rules, the connections where pointing to utorrent.exe not svchost.

here I have a couple of screenies of the popups and my config.

http://s21.postimg.org/g0p3un9l3/op1.jpg

http://s13.postimg.org/o5nqk0avb/op2.jpg

The thing is.. why some of the incoming connections are coming from svchost.exe directly and not utorrent.exe through a port I don´t have configured? Is that normal? Am I missing something?

Thanks in advance.

EDIT: Oh, utorrent version is 3.3.1

[DreadWingKnight]

The thing is.. why some of the incoming connections are coming from svchost.exe directly and not utorrent.exe through a port I don´t have configured? Is that normal? Am I missing something?

ipv6 Teredo tunneling.

[msxcv]

The thing is.. why some of the incoming connections are coming from svchost.exe directly and not utorrent.exe through a port I don´t have configured? Is that normal? Am I missing something?

ipv6 Teredo tunneling.

Could you elaborate a little more please? I don´t quite get it.

Thanks.

[DreadWingKnight]

svchost runs the teredo tunnel. Because they're ipv6 connections and you don't have native ipv6 (that I'm aware of), any incoming ipv6 connections come through on an ipv4 tunnel on that alternate port.