diff -r ed0da09f666b softflowd.8
--- a/softflowd.8	Mon Oct 10 16:53:45 2011 +0900
+++ b/softflowd.8	Wed Oct 12 08:12:36 2011 +0900
@@ -419,5 +419,7 @@
 .Xr pcap 3 ,
 .Xr bpf 4
 .Bd -literal
-http://www.cisco.com/univercd/cc/td/doc/product/rtrmgmt/nfc/nfc_3_0/nfc_ug/nfcform.htm
+http://www.ietf.org/rfc/rfc3954.txt
+.br
+http://www.cisco.com/en/US/products/sw/netmgtsw/ps1964/products_implementation_design_guide09186a00800d6a11.html
 .Ed