BQN identifies a subscriber as a distinctive IP address on the access side: one single IPv4 address or one IPv6 subnet. The default IPv6 subnet is /64.

If there is a NAT between the BQN server and the real subscribers, subscribers whose IP addresses are translated to the same IP address would be considered as the same subscriber.

A new subscriber is identified when the first packet from an IP address is received. This is when the subscriber rate and monitoring rules are evaluated, to choose which policies to apply.

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