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3.2.3.5.3 Packet Processing

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Received packets MUST have a valid RPC header, and the packet type MUST be one of the following: REQUEST, PING, FACK, QUIT, or ACK. Other packet types MUST be discarded.

If the PDU's activity ID matches an existing activity on the server, but the PDU's dc_rpc_cl_pkt_hdr_t.auth_proto or sec_trailer_cl.auth_level fields do not match those in the activity, the server SHOULD ignore the packet.<91>

Handling of specific packet types follows.