Index: pbx/pbx_dundi.c
===================================================================
--- pbx/pbx_dundi.c	(revision 92264)
+++ pbx/pbx_dundi.c	(working copy)
@@ -36,6 +36,10 @@
 #include <sys/signal.h>
 #include <pthread.h>
 #include <net/if.h>
+#if defined(__NetBSD__)
+#include <ifaddrs.h>
+#include <net/if_dl.h>
+#endif
 
 #include "asterisk/file.h"
 #include "asterisk/logger.h"
Index: utils/extconf.c
===================================================================
--- utils/extconf.c	(revision 92264)
+++ utils/extconf.c	(working copy)
@@ -1756,8 +1756,19 @@
  * as ast_atomic_fetchadd_int_slow()
  */
 
-int ast_atomic_fetchadd_int_slow(volatile int *p, int v);
+AST_MUTEX_DEFINE_STATIC(fetchadd_m); /* used for all fetc&add ops */
 
+int ast_atomic_fetchadd_int_slow(volatile int *p, int v)
+{
+        int ret;
+        ast_mutex_lock(&fetchadd_m);
+        ret = *p;
+        *p += v;
+        ast_mutex_unlock(&fetchadd_m);
+        return ret;
+}
+
+
 #if defined(HAVE_OSX_ATOMICS)
 #include "libkern/OSAtomic.h"
 #endif
Index: utils/Makefile
===================================================================
--- utils/Makefile	(revision 92264)
+++ utils/Makefile	(working copy)
@@ -29,6 +29,10 @@
   UTILS:=$(filter-out muted,$(UTILS))
 endif
 
+ifeq ($(OSARCH),NetBSD)
+  UTILS:=$(filter-out muted,$(UTILS))
+endif
+
 ifeq ($(OSARCH),OpenBSD)
   UTILS:=$(filter-out muted,$(UTILS))
 endif