By definition you can’t get a “DDoS” attack from a single IP address.
I find these router based security warnings amusing.
The Wyzecams have often issued too many DNS queries and that traffic might explain your error. But it’s probably just the P2P servers trying to maintain a connection to your camera. Either way it’s actually pretty "normal*. As you’ve seen there are tons of threads about it. Here’s just one that mentions the same OVH hosting.
