[__turbobrew__]

How do you spoof the source IP? If these attacks mainly originate from IoT devices in home/business networks shouldn’t the ISP block outgoing packets which have a source IP which does not match the IP of the home/business routers interface?

I haven’t tried but I would hope my ISP would drop any packets I send out from my home network which do not have the public IP address of my router, but I haven’t tested it.

[silisili]

You're mainly right about the solution - really only the ISPs can do much, and they tend not to.

CF actually wrote a pretty nice article about challenges in doing so - https://blog.cloudflare.com/the-root-cause-of-large-ddos-ip-...