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IPX payloads may be carried in any one of three frames. In addition to Ethernet and 802.2, an IPX packet may be framed in what Novell calls a "Raw 802.3" packet. In this case, the protocol-dependent section consists only of a 2-byte length word. To distinguish these packets from 802.2 packets, Novell specifies that the first 2 bytes of the data section are always set to 0xFF.