diff -ruN a/uml_net/host.c b/uml_net/host.c
--- a/uml_net/host.c	2006-02-27 21:19:52.000000000 +0100
+++ b/uml_net/host.c	2018-09-19 20:45:28.760518489 +0200
@@ -10,6 +10,7 @@
 #include <ctype.h>
 #include <sys/wait.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "output.h"
 #include "host.h"