diff --git a/libifupdown/state.c b/libifupdown/state.c
index ed4f344..6e26066 100644
--- a/libifupdown/state.c
+++ b/libifupdown/state.c
@@ -99,6 +99,7 @@ lif_state_upsert(struct lif_dict *state, const char *ifname, struct lif_interfac
 
 	rec->mapped_if = strdup(iface->ifname);
 	rec->refcount = iface->refcount;
+	rec->is_explicit = iface->is_explicit;
 
 	lif_dict_add(state, ifname, rec);
 }
diff --git a/libifupdown/state.h b/libifupdown/state.h
index bec039c..ae2ba5c 100644
--- a/libifupdown/state.h
+++ b/libifupdown/state.h
@@ -17,11 +17,14 @@
 #define LIBIFUPDOWN_STATE_H__GUARD
 
 #include <stdio.h>
+#include <stdbool.h>
 #include "libifupdown/interface.h"
 
 struct lif_state_record {
 	char *mapped_if;
 	size_t refcount;
+
+	bool is_explicit;
 };
 
 extern bool lif_state_read(struct lif_dict *state, FILE *f);