Index: src/target/iscsi-target.c
--- src/target/iscsi-target.c.orig
+++ src/target/iscsi-target.c
@@ -61,7 +61,7 @@ main(int argc, char **argv)
 		switch (i) {
 		case '4':
 		case '6':
-			(void) snprintf(buf, sizeof(buf), "%d", i);
+			(void) snprintf(buf, sizeof(buf), "%c", i);
 			iscsi_target_setvar(&tgt, "address family", buf);
 			break;
 		case 'b':