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Diffstat (limited to 'src/vnet/ip6-nd/ip6_nd_inline.h')
-rw-r--r--src/vnet/ip6-nd/ip6_nd_inline.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/vnet/ip6-nd/ip6_nd_inline.h b/src/vnet/ip6-nd/ip6_nd_inline.h
index 5e8b9d6e4c0..c959c94ed1d 100644
--- a/src/vnet/ip6-nd/ip6_nd_inline.h
+++ b/src/vnet/ip6-nd/ip6_nd_inline.h
@@ -23,6 +23,7 @@
#include <vnet/ip/icmp46_packet.h>
#include <vnet/ip/ip6.h>
#include <vnet/ip-neighbor/ip_neighbor_types.h>
+#include <vnet/ip6-nd/ip6_ra.h>
typedef enum
{
@@ -71,6 +72,13 @@ icmp6_send_neighbor_advertisement (
clib_host_to_net_u32 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
+ /* if sending RAs is enabled, the "router" flag should be set,
+ * otherwise, neighbors may believe we have changed from a router
+ * to a host - RFC 4861 section 4.4 */
+ if (ip6_ra_adv_enabled (sw_if_index0))
+ icmp6_nsa->advertisement_flags |=
+ clib_host_to_net_u32 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_ROUTER);
+
icmp6_nsa->icmp.checksum = 0;
icmp6_nsa->icmp.checksum =
ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6_h, &bogus_length);