--- libmnl-1.0.4/examples/netfilter/nfct-daemon.c.old	2018-06-21 04:06:51.790655013 +0000
+++ libmnl-1.0.4/examples/netfilter/nfct-daemon.c	2018-06-21 04:03:34.850653597 +0000
@@ -20,6 +20,7 @@
 #include <linux/netfilter/nfnetlink_conntrack.h>
 
 #include <sys/queue.h>
+#include <sys/select.h>
 
 struct nstats {
 	LIST_ENTRY(nstats)	list;