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diff --git a/zebra/connected.h b/zebra/connected.h
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+/*
+ * Interface's address and mask.
+ * Copyright (C) 1997 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _ZEBRA_CONNECTED_H
+#define _ZEBRA_CONNECTED_H
+
+#include <zebra.h>
+#include <stdint.h>
+
+#include "lib/if.h"
+#include "lib/prefix.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern struct connected *connected_check(struct interface *ifp,
+ union prefixconstptr p);
+extern struct connected *connected_check_ptp(struct interface *ifp,
+ union prefixconstptr p,
+ union prefixconstptr d);
+
+extern void connected_add_ipv4(struct interface *ifp, int flags,
+ const struct in_addr *addr, uint16_t prefixlen,
+ const struct in_addr *dest, const char *label,
+ uint32_t metric);
+
+extern void connected_delete_ipv4(struct interface *ifp, int flags,
+ const struct in_addr *addr,
+ uint16_t prefixlen,
+ const struct in_addr *dest);
+
+extern void connected_delete_ipv4_unnumbered(struct connected *ifc);
+
+extern void connected_up(struct interface *ifp, struct connected *ifc);
+extern void connected_down(struct interface *ifp, struct connected *ifc);
+
+extern void connected_add_ipv6(struct interface *ifp, int flags,
+ const struct in6_addr *address,
+ const struct in6_addr *dest, uint16_t prefixlen,
+ const char *label, uint32_t metric);
+extern void connected_delete_ipv6(struct interface *ifp,
+ const struct in6_addr *address,
+ const struct in6_addr *dest,
+ uint16_t prefixlen);
+
+extern int connected_is_unnumbered(struct interface *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*_ZEBRA_CONNECTED_H */