your router can find out where it is in the world and send that information to anyone that requests it even if they don't have your wi-fi password.
see your smartphone, if you look at the options it uses wi-fi as part of it's location tracking even if your not connected to wi-fi.
basically say if i was outside your house and i can see your wi-fi and i turn on my gps it will ping your router with a location request and your router will tell the phone approximately where it is even though i'm not connected to your router. it will then use that information combined with GPS, GLONASS, mobile towers, etc to gain a much more accurate exact location.
i cannot remember what the exact name of that technology is but all modern routers i believe have to have it built in as standard. so both your ip addresses would send the exact same information about your location.
some people have dynamic ip addresses which change on a daily, weekly or monthly basis. so every time they send a message back to sky it's using a completely different ip address.