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From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
Date: Sun, 4 Mar 2012 18:51:46 +0000 (UTC)
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Subject: svn commit: r232514 - head/sys/netinet6
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Author: bz
Date: Sun Mar  4 18:51:45 2012
New Revision: 232514
URL: http://svn.freebsd.org/changeset/base/232514

Log:
  In nd6_options() ignore the RFC 6106 options completely rather than printing
  them if nd6_debug is enabled as unknown.  Leave a comment about the RFC4191
  option as I am undecided so far.
  
  Discussed with:	hrs
  MFC after:	3 days

Modified:
  head/sys/netinet6/nd6.c

Modified: head/sys/netinet6/nd6.c
==============================================================================
--- head/sys/netinet6/nd6.c	Sun Mar  4 18:47:20 2012	(r232513)
+++ head/sys/netinet6/nd6.c	Sun Mar  4 18:51:45 2012	(r232514)
@@ -380,6 +380,14 @@ nd6_options(union nd_opts *ndopts)
 			ndopts->nd_opts_pi_end =
 				(struct nd_opt_prefix_info *)nd_opt;
 			break;
+		/* What about ND_OPT_ROUTE_INFO? RFC 4191 */
+		case ND_OPT_RDNSS:	/* RFC 6106 */
+		case ND_OPT_DNSSL:	/* RFC 6106 */
+			/*
+			 * Silently ignore options we know and do not care about
+			 * in the kernel.
+			 */
+			break;
 		default:
 			/*
 			 * Unknown options must be silently ignored,