Why can't I just route my AMPRNet allocation directly myself ?
In order to combat these attacks, most Internet Service Providers have adopted practices defined by the Internet Standards BCP38 and BCP84. Two of these practices are ingress filtering and Unicast Reverse Path Forwarding.
These practices prevent IP address spoofing by blocking packets whose IP source address is not the in the IP subnet range where the packet originated.
If your ISP implements these practices, you will be unable to transmit packets using your AMPRNet allocation as the source address directly from your home network.
The two ways around these restrictions are: