auto import from //depot/cupcake/@135843
diff --git a/ah.h b/ah.h
new file mode 100644
index 0000000..c22806a
--- /dev/null
+++ b/ah.h
@@ -0,0 +1,57 @@
+/* $NetBSD: ah.h,v 1.12 2000/07/23 05:23:04 itojun Exp $ */
+/* $KAME: ah.h,v 1.12 2000/07/20 17:41:01 itojun Exp $ */
+
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
+ */
+
+/*
+ * RFC1826/2402 authentication header.
+ */
+
+#ifndef _NETINET6_AH_H_
+#define _NETINET6_AH_H_
+
+struct ah {
+ u_int8_t ah_nxt; /* Next Header */
+ u_int8_t ah_len; /* Length of data, in 32bit */
+ u_int16_t ah_reserve; /* Reserved for future use */
+ u_int32_t ah_spi; /* Security parameter index */
+ /* variable size, 32bit bound*/ /* Authentication data */
+};
+
+struct newah {
+ u_int8_t ah_nxt; /* Next Header */
+ u_int8_t ah_len; /* Length of data + 1, in 32bit */
+ u_int16_t ah_reserve; /* Reserved for future use */
+ u_int32_t ah_spi; /* Security parameter index */
+ u_int32_t ah_seq; /* Sequence number field */
+ /* variable size, 32bit bound*/ /* Authentication data */
+};
+
+#endif /*_NETINET6_AH_H_*/