tests: net: rpl: Fix unicast NS sending
If we send unicast NS, then the destination IPv6 address needs
to be in the neighbor cache, otherwise we have a NS sending loop.
Change-Id: I11e8f5d5740248024a0becc77055786cd2e32199
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
diff --git a/tests/net/rpl/src/main.c b/tests/net/rpl/src/main.c
index 03be28b..0c9beba 100644
--- a/tests/net/rpl/src/main.c
+++ b/tests/net/rpl/src/main.c
@@ -428,9 +428,25 @@
static bool net_test_send_ns(void)
{
+ struct net_if *iface = net_if_get_default();
+ struct net_nbr *nbr;
int ret;
- ret = net_ipv6_send_ns(net_if_get_default(),
+ /* As we are sending a node reachability NS (RFC 4861 ch 4.3),
+ * we need to add the neighbor to the cache, otherwise we cannot
+ * send a NS with unicast destination address.
+ */
+ nbr = net_ipv6_nbr_add(iface,
+ &in6addr_my,
+ &iface->link_addr,
+ false,
+ NET_NBR_REACHABLE);
+ if (!nbr) {
+ TC_ERROR("Cannot add to neighbor cache\n");
+ return false;
+ }
+
+ ret = net_ipv6_send_ns(iface,
NULL,
&peer_addr,
&in6addr_my,
