To what extent is the IPv6 Internet polluted by “background radiation”?

In earlier work we set up a number of “black hole” experiments in the Internet, where traffic can enter the experimental setup, but the setup generates no packets in response. All received packets are recorded. So far we’ve used this setup to test a number of empty address blocks that have been allocated to APNIC in recent months, including 1.0.0.0/8, 14.0.0.0 and 223.0.0.0/8.

It’s clear that these days the IPv4 Internet is now heavily polluted with various scanners and probes that attempt to detect the presence of vulnerable systems. This traffic is “dark” traffic in that it exists irrespective of whether it solicits a response from a remote system or not. The average level of dark traffic in the IPv4 Internet is an average of around 20kbps per /16, or the equivalent of a single incoming packet per address every 50 minutes.

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