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If the Address 1 field of an MPDU carrying an A-MSDU does not match any address (i.e., individual or group address) at a receiving STA, then the entire A-MSDU is discarded.
A STA shall discard an MPDU with a group address in the Address 1 field if the value in the Address 1 field does not match any value in the dot11GroupAddressesTable and does not match the Broadcast address value.
b) Group address. A multidestination address, which may be in use by one or more STAs on a given network. The two kinds of group addresses are as follows:
1) Multicast-group address. An address associated by higher level convention with a group of logically related STAs.
2) Broadcast address. A distinguished, predefined group address that always denotes the set of all STAs on a given LAN. All ones are interpreted to be the broadcast address. This group is predefined for each communication medium to consist of all STAs actively connected to that medium; it is used to broadcast to all the active STAs on that medium.
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