64 Year Old Hockey Player Dies After Puck Strikes Him In The Chest Death Of Adam Johnson How Dangerous Is Ice ? Bbc News
同理，一个 ipv6 的 /64 前缀，理论上可用的地址数量甚至比目前整个世界的 ipv4 地址总量还要多。 只是这些地址都处于同一个网段内而已。
64YearOld Hockey Player Dies After Puck Strikes Him in the Chest
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