Logs of different IP's of one device logged the same


So today I tested some logging out. Something I found was when my mobile device was on mobile network, everything worked fine and the correct IP was shown, however when I connected to WiFi, which I confirmed was an entirely different IP and I visit the same website, the tracking details get added on to the existing connection from the mobile network.

Piwik not only doesn’t log these seperately (I would like an option to make it seperate or merged), but it doesn’t log the actual IP address that the second lot of visits came from, unlike something like forum or CMS software does.