diff --git a/lib/ChangeLog b/lib/ChangeLog
index dcf3776..a69abc5 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,7 @@
+2005-02-02 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
+	* if.h: Declare if_flag_dump.
+
 2005-01-30 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
 
 	* daemon.c: (daemon) Replace perror with zlog_err.
diff --git a/lib/if.h b/lib/if.h
index 492a63c..f5efda6 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -227,6 +227,7 @@
 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 ();