auto import from //depot/cupcake/@135843
diff --git a/print-ripng.c b/print-ripng.c
new file mode 100644
index 0000000..5e7a02e
--- /dev/null
+++ b/print-ripng.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 1989, 1990, 1991, 1993, 1994
+ * 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: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-ripng.c,v 1.18 2005/01/04 00:15:54 guy Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef INET6
+
+#include <tcpdump-stdinc.h>
+#include <stdio.h>
+
+#include "route6d.h"
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+#if !defined(IN6_IS_ADDR_UNSPECIFIED) && !defined(_MSC_VER) /* MSVC inline */
+static int IN6_IS_ADDR_UNSPECIFIED(const struct in6_addr *addr)
+{
+ static const struct in6_addr in6addr_any; /* :: */
+ return (memcmp(addr, &in6addr_any, sizeof(*addr)) == 0);
+}
+#endif
+
+static int
+rip6_entry_print(register const struct netinfo6 *ni, int metric)
+{
+ int l;
+ l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen);
+ if (ni->rip6_tag)
+ l += printf(" [%d]", EXTRACT_16BITS(&ni->rip6_tag));
+ if (metric)
+ l += printf(" (%d)", ni->rip6_metric);
+ return l;
+}
+
+void
+ripng_print(const u_char *dat, unsigned int length)
+{
+ register const struct rip6 *rp = (struct rip6 *)dat;
+ register const struct netinfo6 *ni;
+ register u_int amt;
+ register u_int i;
+ int j;
+ int trunc;
+
+ if (snapend < dat)
+ return;
+ amt = snapend - dat;
+ i = min(length, amt);
+ if (i < (sizeof(struct rip6) - sizeof(struct netinfo6)))
+ return;
+ i -= (sizeof(struct rip6) - sizeof(struct netinfo6));
+
+ switch (rp->rip6_cmd) {
+
+ case RIP6_REQUEST:
+ j = length / sizeof(*ni);
+ if (j == 1
+ && rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6
+ && IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) {
+ printf(" ripng-req dump");
+ break;
+ }
+ if (j * sizeof(*ni) != length - 4)
+ printf(" ripng-req %d[%u]:", j, length);
+ else
+ printf(" ripng-req %d:", j);
+ trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
+ for (ni = rp->rip6_nets; i >= sizeof(*ni);
+ i -= sizeof(*ni), ++ni) {
+ if (vflag > 1)
+ printf("\n\t");
+ else
+ printf(" ");
+ rip6_entry_print(ni, 0);
+ }
+ break;
+ case RIP6_RESPONSE:
+ j = length / sizeof(*ni);
+ if (j * sizeof(*ni) != length - 4)
+ printf(" ripng-resp %d[%u]:", j, length);
+ else
+ printf(" ripng-resp %d:", j);
+ trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
+ for (ni = rp->rip6_nets; i >= sizeof(*ni);
+ i -= sizeof(*ni), ++ni) {
+ if (vflag > 1)
+ printf("\n\t");
+ else
+ printf(" ");
+ rip6_entry_print(ni, ni->rip6_metric);
+ }
+ if (trunc)
+ printf("[|ripng]");
+ break;
+ default:
+ printf(" ripng-%d ?? %u", rp->rip6_cmd, length);
+ break;
+ }
+ if (rp->rip6_vers != RIP6_VERSION)
+ printf(" [vers %d]", rp->rip6_vers);
+}
+#endif /* INET6 */