Yes, I have an iPhone and iPad on the network, but I disconnected them from the network during these attacks. There is no firewall configuration in my LTE router, it is in the standard configuration from T-Mobile. And my computer is currently after a fresh installation of Windows - just now I did it again.
@Marcos I will try to intercept the transmissions in the next situation of this type, however I do not know when it will happen, because at the moment it stopped.
@Nocna sowa I had a situation that a device with an external IP appeared in my local network, which after checking did not exist, and the device normally used SSDP using the svchost.exe process.