memset(&opening_mbuf,0,sizeof(opening_mbuf));
opening_mbuf.magic= OPENING_MAGIC;
memcpy(opening_mbuf.protocolchecksumversion,protocolchecksumversion,PCSUMSIZE);
memset(&opening_mbuf,0,sizeof(opening_mbuf));
opening_mbuf.magic= OPENING_MAGIC;
memcpy(opening_mbuf.protocolchecksumversion,protocolchecksumversion,PCSUMSIZE);