Filter the IPv6 Discard-Only Prefix because it should not be globally

routable. See RFC6666. Diff by Gleydson Soares.

src/etc/bgpd.conf

@@ -1,4 +1,4 @@
-# $OpenBSD: bgpd.conf,v 1.14 2013/06/02 14:11:38 florian Exp $
+# $OpenBSD: bgpd.conf,v 1.15 2013/08/14 21:25:43 claudio Exp $
 # sample bgpd configuration file
 # see bgpd.conf(5)
 
@@ -103,6 +103,7 @@ deny from any prefix 240.0.0.0/4 prefixlen >= 4 	# reserved
 
 # filter bogus IPv6 networks according to IANA
 deny from any prefix ::/8 prefixlen >= 8
+deny from any prefix 0100::/64 prefixlen >= 64		# Discard-Only [RFC6666]
 deny from any prefix 2001:2::/48 prefixlen >= 48	# BMWG [RFC5180]
 deny from any prefix 2001:10::/28 prefixlen >= 28	# ORCHID [RFC4843]
 deny from any prefix 2001:db8::/32 prefixlen >= 32	# docu range [RFC3849]