DoS attack, Teardrop or derivative, Ping of Death, strange non-DHCP IP address connected to wifi

I have run into this issue as well. I just purchase the c7000 today and withing minutes of setting it up (yes I changed the default settings and passwords) and browsing around the admin settings I noticed that my log was showing DoS attacks: Ping of Death, Teardrop...etc. All were coming from ip address 78.197.43.0 port 0 (shows France when googled). When I checked connected devices I had one device with that particular IP assignment. I determined it was my Iphone 6S. I switched it over to the 5G network and that solved it for that device. I checked back a few minutes later and I now have the same ip address showing in the connected devices but it is no longer my iphone, it's just an undefined device (listed as ---). Does not appear to be affecting speed or connectivity at the moment

For reference, Time Warner customer in Raleigh, NC