Index: dbutils.c
--- dbutils.c.orig	2017-11-22 00:22:08.516800000 +0100
+++ dbutils.c	2017-11-22 00:22:23.595476000 +0100
@@ -23,6 +23,7 @@
 #include <sys/time.h>
 #include <sys/stat.h>
 #include <dirent.h>
+#include <netinet/in.h>
 
 #include "repmgr.h"
 #include "dbutils.h"