From 802136dd9a41987451565050657ce6f201fd56d2 Mon Sep 17 00:00:00 2001
From: Martine Lenders <mlenders@inf.fu-berlin.de>
Date: Tue, 22 Mar 2016 20:02:27 +0100
Subject: [PATCH] gnrc_ndp: unset isRouter flag for neighbor sending RS
---
sys/net/gnrc/network_layer/ndp/gnrc_ndp.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c b/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c
index 893570ece1..016d2ed6cc 100644
--- a/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c
+++ b/sys/net/gnrc/network_layer/ndp/gnrc_ndp.c
@@ -381,6 +381,7 @@ void gnrc_ndp_rtr_sol_handle(kernel_pid_t iface, gnrc_pktsnip_t *pkt,
gnrc_ipv6_netif_t *if_entry = gnrc_ipv6_netif_get(iface);
if (if_entry->flags & GNRC_IPV6_NETIF_FLAGS_ROUTER) {
+ gnrc_ipv6_nc_t *nc_entry;
int sicmpv6_size = (int)icmpv6_size, l2src_len = 0;
uint8_t l2src[GNRC_IPV6_NC_L2_ADDR_MAX];
uint16_t opt_offset = 0;
@@ -458,12 +459,18 @@ void gnrc_ndp_rtr_sol_handle(kernel_pid_t iface, gnrc_pktsnip_t *pkt,
/* or unicast, if source is known */
/* XXX: can't just use GNRC_NETAPI_MSG_TYPE_SND, since the next retransmission
* must also be set. */
- gnrc_ipv6_nc_t *nc_entry = gnrc_ipv6_nc_get(iface, &ipv6->src);
+ nc_entry = gnrc_ipv6_nc_get(iface, &ipv6->src);
xtimer_set_msg(&nc_entry->rtr_adv_timer, delay, &nc_entry->rtr_adv_msg,
gnrc_ipv6_pid);
}
#endif
}
+ nc_entry = gnrc_ipv6_nc_get(iface, &ipv6->src);
+ if (nc_entry != NULL) {
+ /* unset isRouter flag
+ * (https://tools.ietf.org/html/rfc4861#section-6.2.6) */
+ nc_entry->flags &= ~GNRC_IPV6_NC_IS_ROUTER;
+ }
}
/* otherwise ignore silently */
}
--
GitLab