1 files changed, 1 insertions, 0 deletions
diff --git a/lib/if.h b/lib/if.h
index 492a63c9..f5efda6e 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -227,6 +227,7 @@ void if_add_hook (int, int (*)(struct interface *));
 void if_init ();
 void if_dump_all ();
 char *ifindex2ifname (unsigned int);
+extern const char *if_flag_dump(unsigned long);
 
 /* Connected address functions. */
 struct connected *connected_new ();