Provider Independent vs Provider Aggregatable Address Space
|Document||Type||Expired Internet-Draft (individual)|
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One can currently distinguish two kinds of globally unique, unicast IPv4 addresses: provider independent (PI) and provider aggregatable (PA) addresses. These addresses are assigned to end-users by Internet Registries (IRs). There are also non globally unique e.g. private unicast addresses as described in RFC1597 which are suitable for many applications.
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