(1.SpaceAcademy,NorthwestPolytechnicalUniversity,Xi’an710069;2.Xi’anSatelliteControlCenter,Xi’an710043)Abstract:BasedonstudyofIGMP(InternetGroupManagementProtoco1)V3anditspreviousversions,rawsocketsareusedtOinterceptIGMPV3relationshipquerypacketsandIGMPV3relationshipreportmessagesaresimulatedtospoofswitches/routesin...