113 typedef	struct	nat	{  struct
114 	ipfmutex_t	nat_lock;  argument
115 	struct	nat	*nat_next;  argument
116 	struct	nat	**nat_pnext;  argument
117 	struct	nat	*nat_hnext[2];  argument
118 	struct	nat	**nat_phnext[2];  argument
119 	struct	hostmap	*nat_hm;  argument
120 	void		*nat_data;  argument
121 	struct	nat	**nat_me;  argument
122 	struct	ipstate	*nat_state;  argument
123 	struct	ap_session	*nat_aps;		/* proxy session */  argument
124 	frentry_t	*nat_fr;	/* filter rule ptr if appropriate */  argument
125 	struct	ipnat	*nat_ptr;	/* pointer back to the rule */  argument
126 	void		*nat_ifps[2];  argument
127 	void		*nat_sync;  argument
128 	ipftqent_t	nat_tqe;  argument
129 	int		nat_mtu[2];  argument
130 	u_32_t		nat_flags;  argument
131 	u_32_t		nat_sumd[2];	/* ip checksum delta for data segment*/  argument
132 	u_32_t		nat_ipsumd;	/* ip checksum delta for ip header */  argument
133 	u_32_t		nat_mssclamp;	/* if != zero clamp MSS to this */  argument
134 	i6addr_t	nat_odst6;  argument
135 	i6addr_t	nat_osrc6;  argument
136 	i6addr_t	nat_ndst6;  argument
137 	i6addr_t	nat_nsrc6;  argument
138 	U_QUAD_T	nat_pkts[2];  argument
139 	U_QUAD_T	nat_bytes[2];  argument
141 		udpinfo_t	nat_unu;  argument
145 	} nat_unold, nat_unnew;  argument
146 	int		nat_use;  argument
147 	int		nat_pr[2];		/* protocol for NAT */  argument
148 	int		nat_dir;  argument
149 	int		nat_ref;		/* reference count */  argument
150 	u_int		nat_hv[2];  argument
151 	char		nat_ifnames[2][LIFNAMSIZ];  argument
152 	int		nat_rev;		/* 0 = forward, 1 = reverse */  argument
153 	int		nat_dlocal;  argument
154 	int		nat_v[2];		/* 0 = old, 1 = new */  argument
155 	u_int		nat_redir;		/* copy of in_redir */  argument