rainbow las vegas, problem

The other week i rented R6LV and after playing for about an hour or less online i would get kicked out of a match. then when i tried to get into another match it wouldsay i lost my live connection.... i would run the test and it said my ip addy failed so i go to my computer and try it and that didnt work because it had no ip addy also... it was easy to fix i just had to restard my modem.... but whats weird is that this happened all 3 times i played online and only on this game.... does anyone else have this problem. im glad i didnt buy it, because it is annoying having to restart my modem, because i connect directly my live cord directly 2 my modem