From effe7bbde008d815e46b8597a606bc38ec4e5bca Mon Sep 17 00:00:00 2001
From: Oleg Hahm <oleg@hobbykeller.org>
Date: Sun, 20 Sep 2015 21:40:26 +0200
Subject: [PATCH] 6lowpan: 6LBR need to initialize rtr adv interval

---
 .../sixlowpan/nd/router/gnrc_sixlowpan_nd_router.c         | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sys/net/gnrc/network_layer/sixlowpan/nd/router/gnrc_sixlowpan_nd_router.c b/sys/net/gnrc/network_layer/sixlowpan/nd/router/gnrc_sixlowpan_nd_router.c
index ca44f44fa0..673d1f2296 100644
--- a/sys/net/gnrc/network_layer/sixlowpan/nd/router/gnrc_sixlowpan_nd_router.c
+++ b/sys/net/gnrc/network_layer/sixlowpan/nd/router/gnrc_sixlowpan_nd_router.c
@@ -112,8 +112,15 @@ void gnrc_sixlowpan_nd_router_set_rtr_adv(gnrc_ipv6_netif_t *netif, bool enable)
 
     if (enable && (gnrc_ipv6_netif_add_addr(netif->pid, &all_routers, 128,
                                             GNRC_IPV6_NETIF_ADDR_FLAGS_NON_UNICAST) != NULL)) {
+        mutex_lock(&netif->mutex);
         netif->flags |= GNRC_IPV6_NETIF_FLAGS_RTR_ADV;
         netif->adv_ltime = GNRC_IPV6_NETIF_DEFAULT_ROUTER_LTIME;
+#ifdef MODULE_GNRC_NDP_ROUTER
+        /* for border router these values have to be initialized, too */
+        netif->max_adv_int = GNRC_IPV6_NETIF_DEFAULT_MAX_ADV_INT;
+        netif->min_adv_int = GNRC_IPV6_NETIF_DEFAULT_MIN_ADV_INT;
+#endif
+        mutex_unlock(&netif->mutex);
     }
     else {
         netif->flags &= ~GNRC_IPV6_NETIF_FLAGS_RTR_ADV;
-- 
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