Do whatever you can to remove this from your network as soon as you can. OpenWRT as a suggestion.

Are you using isp provided hardware?

My experience with said items has been poor. Literal open doors to your network.

https://discourse.pi-hole.net/t/comcast-router-advertises-its-own-ipv6-as-dns-server/61487

Can I get some more info. Do you know what device on your network is asking for said address?

Roku: has its own problems, but I dont use the smart tv features and turn them all off especially the wifi. It doesnt talk to my isp and ive never got requests from it.

Silicon CCDs have lifetime exposure limits also. Perovskites are delicate and 1000 hours is way less than the millions silicon offer, but its also overkill in a still camera. Lenses wear out faster than silicon tech does.

“Based on the prevention of arms proliferation and other national security considerations, a total of 601 entities involved in arms proliferation activities were added to the list …[“strategic high-tech commodities entity list”, the Ministry of Economic Affairs’ International Trade Administration said]… including Chinese companies such as Huawei and SMIC,” the administration said in a statement.