diff --git a/libc/netbsd/net/nsdispatch.c b/libc/netbsd/net/nsdispatch.c
new file mode 100644
index 0000000..fa99366
--- /dev/null
+++ b/libc/netbsd/net/nsdispatch.c
@@ -0,0 +1,152 @@
+/*	$NetBSD: nsdispatch.c,v 1.30 2005/11/29 03:11:59 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1997, 1998, 1999, 2004 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Luke Mewburn; and by Jason R. Thorpe.
+ *
+ * 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 NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*-
+ * Copyright (c) 2003 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * Portions of this software were developed for the FreeBSD Project by
+ * Jacques A. Vidrine, Safeport Network Services, and Network
+ * Associates Laboratories, the Security Research Division of Network
+ * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <assert.h>
+#ifdef __ELF__
+#include <dlfcn.h>
+#endif /* __ELF__ */
+#include <fcntl.h>
+#define _NS_PRIVATE
+#include <nsswitch.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static nss_method
+_nsmethod(const char *source, const char *database, const char *method,
+    const ns_dtab disp_tab[], void **cb_data)
+{
+	int	curdisp;
+
+	if (disp_tab != NULL) {
+		for (curdisp = 0; disp_tab[curdisp].src != NULL; curdisp++) {
+			if (strcasecmp(source, disp_tab[curdisp].src) == 0) {
+				*cb_data = disp_tab[curdisp].cb_data;
+				return (disp_tab[curdisp].callback);
+			}
+		}
+	}
+
+	*cb_data = NULL;
+	return (NULL);
+}
+
+int
+/*ARGSUSED*/
+nsdispatch(void *retval, const ns_dtab disp_tab[], const char *database,
+	    const char *method, const ns_src defaults[], ...)
+{
+	va_list		 ap;
+	int		 i, result;
+	const ns_src	*srclist;
+	int		 srclistsize;
+	nss_method	 cb;
+	void		*cb_data;
+
+	/* retval may be NULL */
+	/* disp_tab may be NULL */
+	assert(database != NULL);
+	assert(method != NULL);
+	assert(defaults != NULL);
+	if (database == NULL || method == NULL || defaults == NULL)
+		return (NS_UNAVAIL);
+
+        srclist = defaults;
+        srclistsize = 0;
+        while (srclist[srclistsize].name != NULL)
+                srclistsize++;
+
+	result = 0;
+
+	for (i = 0; i < srclistsize; i++) {
+		cb = _nsmethod(srclist[i].name, database, method,
+		    disp_tab, &cb_data);
+		result = 0;
+		if (cb != NULL) {
+			va_start(ap, defaults);
+			result = (*cb)(retval, cb_data, ap);
+			va_end(ap);
+			if (defaults[0].flags & NS_FORCEALL)
+				continue;
+			if (result & srclist[i].flags)
+				break;
+		}
+	}
+	result &= NS_STATUSMASK;	/* clear private flags in result */
+
+	return (result ? result : NS_NOTFOUND);
+}