PacketFactory implementations are used to instantiate Packet classes (e.g. EthernetPacket) and packet piese classes (e.g. IpV4Rfc1349Tos) included in Pcap4J Core module, namely pcap4j-core.jar.
PacketFactoryBinder class is included in Pcap4J Core module source but it is a dummy and removed in the assembry process. Actual PacketFactoryBinder class is in Static Packet Factory module (pcap4j-packetfactory-static.jar) and Properties-Based Packet Factory (pcap4j-packetfactory-propertiesbased.jar), which also include PacketFactory implementations.