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diff --git a/libs/watt32/netinet/in_var.h b/libs/watt32/netinet/in_var.h
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+/*!\file netinet/in_var.h
+ * IP interface address.
+ */
+
+/*
+ * Copyright (c) 1985, 1986, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *      @(#)in_var.h    8.2 (Berkeley) 1/9/95
+ *      $Id: in_var.h,v 1.17 1996/03/14 16:59:19 fenner Exp $
+ */
+
+#ifndef __NETINET_IN_VAR_H
+#define __NETINET_IN_VAR_H
+
+#include <sys/queue.h>
+
+/*
+ * Interface address, Internet version.  One of these structures
+ * is allocated for each interface with an Internet address.
+ * The ifaddr structure contains the protocol-independent part
+ * of the structure and is assumed to be first.
+ */
+struct in_ifaddr {
+        struct  ifaddr ia_ifa;          /* protocol-independent info */
+#define ia_ifp          ia_ifa.ifa_ifp
+#define ia_flags        ia_ifa.ifa_flags
+                                        /* ia_{,sub}net{,mask} in host order */
+        u_long  ia_net;                 /* network number of interface */
+        u_long  ia_netmask;             /* mask of net part */
+        u_long  ia_subnet;              /* subnet number, including net */
+        u_long  ia_subnetmask;          /* mask of subnet part */
+        struct  in_addr ia_netbroadcast; /* to recognize net broadcasts */
+        struct  in_ifaddr *ia_next;     /* next in list of internet addresses */
+        struct  sockaddr_in ia_addr;    /* reserve space for interface name */
+        struct  sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
+#define ia_broadaddr    ia_dstaddr
+        struct  sockaddr_in ia_sockmask; /* reserve space for general netmask */
+        LIST_HEAD(in_multihead, in_multi) ia_multiaddrs;
+                                        /* list of multicast addresses */
+};
+
+struct  in_aliasreq {
+        char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
+        struct  sockaddr_in ifra_addr;
+        struct  sockaddr_in ifra_broadaddr;
+#define ifra_dstaddr ifra_broadaddr
+        struct  sockaddr_in ifra_mask;
+};
+/*
+ * Given a pointer to an in_ifaddr (ifaddr),
+ * return a pointer to the addr as a sockaddr_in.
+ */
+#define IA_SIN(ia)    (&(((struct in_ifaddr *)(ia))->ia_addr))
+#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))
+
+#define IN_LNAOF(in, ifa) \
+        ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
+
+
+/*
+ * This information should be part of the ifnet structure but we don't wish
+ * to change that - as it might break a number of things
+ */
+
+struct router_info {
+        struct ifnet *rti_ifp;
+        int    rti_type; /* type of router which is querier on this interface */
+        int    rti_time; /* # of slow timeouts since last old query */
+        struct router_info *rti_next;
+};
+
+/*
+ * Internet multicast address structure.  There is one of these for each IP
+ * multicast group to which this host belongs on a given network interface.
+ * They are kept in a linked list, rooted in the interface's in_ifaddr
+ * structure.
+ */
+struct in_multi {
+        LIST_ENTRY(in_multi) inm_entry; /* list glue */
+        struct  in_addr inm_addr;       /* IP multicast address */
+        struct  ifnet *inm_ifp;         /* back pointer to ifnet */
+        struct  in_ifaddr *inm_ia;      /* back pointer to in_ifaddr */
+        u_int   inm_refcount;           /* no. membership claims by sockets */
+        u_int   inm_timer;              /* IGMP membership report timer */
+        u_int   inm_state;              /*  state of the membership */
+        struct  router_info *inm_rti;   /* router info*/
+};
+
+#endif