I think that it's better to report bugs into Bugzilla.
diff --git a/isisd/isis_main.c b/isisd/isis_main.c
index d9bdd47..64905d3 100644
--- a/isisd/isis_main.c
+++ b/isisd/isis_main.c
@@ -124,7 +124,7 @@
 -v, --version      Print program version\n\
 -h, --help         Display this help and exit\n\
 \n\
-Report bugs to sambo@cs.tut.fi\n", progname);
+Report bugs to http://bugzilla.quagga.net\n", progname);
     }
 
   exit (status);