Brute-force IPv6 scanning doesn’t scale, and ICMPv6 rate limiting can undermine topology measurements. Maynard Koch and colleagues show how Subnet-Router Anycast (SRA) probing discovers more router addresses, delivers more stable results, and expands the IPv6 measurement toolbox.

Read more here: https://labs.ripe.net/author/mkoch/discovery-of-ipv6-router-addresses-using-subnet-router-anycast/