diff --git a/usrsctplib/netinet6/sctp6_var.h b/usrsctplib/netinet6/sctp6_var.h
new file mode 100755
index 0000000..ed9f84a
--- /dev/null
+++ b/usrsctplib/netinet6/sctp6_var.h
@@ -0,0 +1,87 @@
+/*-
+ * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * b) 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.
+ *
+ * c) Neither the name of Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/sys/netinet6/sctp6_var.h 309607 2016-12-06 10:21:25Z tuexen $");
+#endif
+
+#ifndef _NETINET6_SCTP6_VAR_H_
+#define _NETINET6_SCTP6_VAR_H_
+
+#if defined(__Userspace__)
+#ifdef INET
+extern void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *);
+extern void in6_sin6_2_sin_in_sock(struct sockaddr *);
+extern void in6_sin_2_v4mapsin6(struct sockaddr_in *, struct sockaddr_in6 *);
+#endif
+#endif
+#if defined(_KERNEL)
+
+#if defined(__FreeBSD__) || (__APPLE__) || defined(__Windows__)
+SYSCTL_DECL(_net_inet6_sctp6);
+extern struct pr_usrreqs sctp6_usrreqs;
+#else
+int sctp6_usrreq(struct socket *, int, struct mbuf *, struct mbuf *, struct mbuf *);
+#endif
+
+#if defined(__APPLE__)
+int sctp6_input(struct mbuf **, int *);
+int sctp6_input_with_port(struct mbuf **, int *, uint16_t);
+#elif defined(__Panda__)
+int sctp6_input (pakhandle_type *);
+#elif defined(__FreeBSD__) && __FreeBSD_version < 902000
+int sctp6_input __P((struct mbuf **, int *, int));
+int sctp6_input_with_port __P((struct mbuf **, int *, uint16_t));
+#else
+int sctp6_input(struct mbuf **, int *, int);
+int sctp6_input_with_port(struct mbuf **, int *, uint16_t);
+#endif
+#if defined(__FreeBSD__) && __FreeBSD_version < 902000
+int sctp6_output
+__P((struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
+     struct mbuf *, struct proc *));
+void sctp6_ctlinput __P((int, struct sockaddr *, void *));
+#else
+int sctp6_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
+                 struct mbuf *, struct proc *);
+void sctp6_ctlinput(int, struct sockaddr *, void *);
+#endif
+#if !(defined(__FreeBSD__) || defined(__APPLE__))
+extern void in6_sin_2_v4mapsin6(struct sockaddr_in *, struct sockaddr_in6 *);
+extern void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *);
+extern void in6_sin6_2_sin_in_sock(struct sockaddr *);
+#endif
+void sctp6_notify(struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *,
+                  uint8_t, uint8_t, uint16_t);
+#endif
+#endif