ipt_flg           145 netinet/ip.h   	u_int    ipt_flg:4,		/* flags, see below */
ipt_flg           150 netinet/ip.h   		 ipt_flg:4;		/* flags, see below */
ipt_flg          1164 netinet/ip_input.c 			switch (ipt.ipt_flg) {