--- src/iptraf.c
+++ src/iptraf.c
@@ -73,7 +73,7 @@
 int is_first_instance;
 char active_facility_lockfile[64];
 char active_facility_countfile[64];
-int accept_unsupported_interfaces = 0;
+int accept_unsupported_interfaces = 1;
 char graphing_filter[80];
 
 extern void about();