More supported RFCs added.
diff --git a/doc/overview.texi b/doc/overview.texi
index d4e7c6b..b66b35b 100644
--- a/doc/overview.texi
+++ b/doc/overview.texi
@@ -216,6 +216,12 @@
@item @asis{RFC2328}
@cite{OSPF Version 2. J. Moy. April 1998.}
+@item @asis{RFC2370}
+@cite{The OSPF Opaque LSA Option R. Coltun. July 1998.}
+
+@item @asis{RFC3101}
+@cite{The OSPF Not-So-Stubby Area (NSSA) Option P. Murphy. January 2003.}
+
@item @asis{RFC2740}
@cite{OSPF for IPv6. R. Coltun, D. Ferguson, J. Moy. December 1999.}