3.1.5 Processing Events and Sequencing Rules

Malformed packets are packets that do not adhere to the rules described in sections 2 and 3 with the exception of sections 3.2.5 and 3.3.5. Out-of-sequence packets are packets that do not adhere to the rules in sections 3.2.5 and 3.3.5. Malformed and out-of-sequence packets MUST be ignored by the server and the client.