kppp: fix to build on NetBSD

Signed-off-by: OBATA Akio <obache@wizdas.com>
(cherry picked from commit 48ca387b65)

kppp/pppstats.cpp

@@ -56,9 +56,12 @@
 #include <netinet/in.h>
 #ifdef __DragonFly__
 #include <net/ppp_layer/ppp_defs.h>
-#elif defined(__FreeBSD__)
+#elif defined(__FreeBSD__) || defined(__NetBSD__)
 #include <net/if.h>
 #include <net/ppp_defs.h>
+#ifdef __NetBSD__
+#include <net/if_ppp.h>
+#endif
 #else
 #include <net/ppp_defs.h>
 #endif
@@ -294,7 +297,7 @@ bool PPPStats::doStats() {
 
 #ifndef STREAMS
 bool PPPStats::get_ppp_stats(struct ppp_stats *curp){
-# if !defined(__FreeBSD__)
+# if !defined(__FreeBSD__) && !defined(__NetBSD__)
   struct ifpppstatsreq req;
 
     if(s==0)