ref: e687d254784b0c4ab12636f7a942f447418d5e82
parent: 1a6324970d4cb0f0508caa3a685355d500709f1a
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sun Oct 10 10:22:14 EDT 2021
devip: use top bit (type) | subnet-id for V6H() route hash macro theres no structure in the lower 32 bits of an ipv6 address. use the top bit to distinguish special stuff like multicast and link-local addresses, and use the 16-bit subnet-id bits for the rest.