diff --git a/sys/include/net/gnrc/netapi/notify.h b/sys/include/net/gnrc/netapi/notify.h
index 8e82adedca..d495727270 100644
--- a/sys/include/net/gnrc/netapi/notify.h
+++ b/sys/include/net/gnrc/netapi/notify.h
@@ -48,6 +48,8 @@ extern "C" {
 typedef enum {
     NETAPI_NOTIFY_L2_NEIGH_CONNECTED,       /**< Connection established on layer 2. */
     NETAPI_NOTIFY_L2_NEIGH_DISCONNECTED,    /**< Connection closed on layer 2. */
+    NETAPI_NOTIFY_L3_DISCOVERED,            /**< Discovered node on the network layer. */
+    NETAPI_NOTIFY_L3_UNREACHABLE,           /**< Node became unreachable on the network layer. */
 } netapi_notify_t;
 
 /**
diff --git a/sys/include/net/gnrc/nettype.h b/sys/include/net/gnrc/nettype.h
index 8ce21f4633..342ea57164 100644
--- a/sys/include/net/gnrc/nettype.h
+++ b/sys/include/net/gnrc/nettype.h
@@ -139,6 +139,15 @@ typedef enum {
      *          and their l2 address.
      */
     GNRC_NETTYPE_L2_DISCOVERY,
+    /**
+     * @brief   Reports routing-relevant information, e.g., discovered or
+     *          unreachable nodes, from the IPv6-layer to routing protocol like
+     *          RPL.
+     *
+     * @note    Compared to @ref GNRC_NETTYPE_L2_DISCOVERY, events published to
+     *          this type include the IPv6 address of the node.
+     */
+    GNRC_NETTYPE_L3_ROUTING,
     /** @} */
 
     /**
diff --git a/sys/net/gnrc/netapi/notify/gnrc_netapi_notify.c b/sys/net/gnrc/netapi/notify/gnrc_netapi_notify.c
index 4f8c4b806a..2e1fe08b94 100644
--- a/sys/net/gnrc/netapi/notify/gnrc_netapi_notify.c
+++ b/sys/net/gnrc/netapi/notify/gnrc_netapi_notify.c
@@ -36,6 +36,14 @@ int _copy_l2_connection_data(gnrc_netapi_notify_t *notify, netapi_notify_l2_conn
     return sizeof(netapi_notify_l2_connection_t);
 }
 
+int _copy_l3_address(gnrc_netapi_notify_t *notify, ipv6_addr_t *addr)
+{
+    assert(notify->_data_len == sizeof(ipv6_addr_t));
+
+    memcpy(addr, notify->_data, sizeof(ipv6_addr_t));
+    return sizeof(ipv6_addr_t);
+}
+
 int gnrc_netapi_notify_copy_event_data(gnrc_netapi_notify_t *notify, uint8_t data_len, void *data)
 {
     int res;
@@ -49,6 +57,14 @@ int gnrc_netapi_notify_copy_event_data(gnrc_netapi_notify_t *notify, uint8_t dat
         }
         res = _copy_l2_connection_data(notify, data);
         break;
+    case NETAPI_NOTIFY_L3_DISCOVERED:
+    case NETAPI_NOTIFY_L3_UNREACHABLE:
+        if (data_len != sizeof(ipv6_addr_t)) {
+            res = -EINVAL;
+            break;
+        }
+        res = _copy_l3_address(notify, data);
+        break;
     default:
         res = -EINVAL;
         break;
diff --git a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
index b53cbb7e59..33517d80dd 100644
--- a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
+++ b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
@@ -207,10 +207,18 @@ static inline void _on_l2_connected(kernel_pid_t if_pid, uint8_t *l2addr, uint8_
 {
     (void)if_pid;
 
+    ipv6_addr_t ipv6;
+
 #if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_6LN)
     /* Add neighbor to neighbor cache if interface represents a 6LN. */
     gnrc_ipv6_nib_nc_set_6ln(if_pid, l2addr, l2addr_len);
 #endif /* CONFIG_GNRC_IPV6_NIB_6LN */
+
+    /* Inform routing layer of new reachable neighbor. */
+    if (_find_entry_in_nc(l2addr, l2addr_len, &ipv6)) {
+        gnrc_netapi_notify(GNRC_NETTYPE_L3_ROUTING, GNRC_NETREG_DEMUX_CTX_ALL,
+                           NETAPI_NOTIFY_L3_DISCOVERED, &ipv6, sizeof(ipv6_addr_t));
+    }
 }
 
 /**
@@ -224,6 +232,15 @@ static inline void _on_l2_disconnected(kernel_pid_t if_pid, uint8_t *l2addr, uin
 {
     (void)if_pid;
 
+    ipv6_addr_t ipv6;
+
+    /* Inform routing layer of unreachable neighbor. This must be done *before* removing
+       the neighbor from the neighbor cache. */
+    if (_find_entry_in_nc(l2addr, l2addr_len, &ipv6)) {
+        gnrc_netapi_notify(GNRC_NETTYPE_L3_ROUTING, GNRC_NETREG_DEMUX_CTX_ALL,
+                           NETAPI_NOTIFY_L3_UNREACHABLE, &ipv6, sizeof(ipv6_addr_t));
+    }
+
 #if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_ARSM)
     /* Remove from neighbor cache. */
     gnrc_ipv6_nib_nc_del_l2(if_pid, l2addr, l2addr_len);