/* @(#) $Header: /tcpdump/master/tcpdump/igrp.h,v 1.6 2002-12-11 07:13:52 guy Exp $ (LBL) *//* Cisco IGRP definitions *//* IGRP Header */struct igrphdr {	u_int8_t ig_vop;	/* protocol version number / opcode */#define IGRP_V(x)	(((x) & 0xf0) >> 4)#define IGRP_OP(x)	((x) & 0x0f)	u_int8_t ig_ed;		/* edition number */	u_int16_t ig_as;	/* autonomous system number */	u_int16_t ig_ni;	/* number of subnet in local net */	u_int16_t ig_ns;	/* number of networks in AS */	u_int16_t ig_nx;	/* number of networks ouside AS */	u_int16_t ig_sum;	/* checksum of IGRP header & data */};#define IGRP_UPDATE	1#define IGRP_REQUEST	2/* IGRP routing entry */struct igrprte {	u_int8_t igr_net[3];	/* 3 significant octets of IP address */	u_int8_t igr_dly[3];	/* delay in tens of microseconds */	u_int8_t igr_bw[3];	/* bandwidth in units of 1 kb/s */	u_int8_t igr_mtu[2];	/* MTU in octets */	u_int8_t igr_rel;	/* percent packets successfully tx/rx */	u_int8_t igr_ld;	/* percent of channel occupied */	u_int8_t igr_hct;	/* hop count */};#define IGRP_RTE_SIZE	14	/* don't believe sizeof ! */