[riot-notifications] [RIOT-OS/RIOT] gnrc_ipv6_nib: handle route information option (#16568)

benpicco notifications at github.com
Mon Jun 28 10:04:05 CEST 2021

@benpicco commented on this pull request.

> @@ -174,6 +174,17 @@ void dhcpv6_client_conf_prefix(unsigned iface, const ipv6_addr_t *pfx,
             gnrc_rpl_root_init(CONFIG_GNRC_RPL_DEFAULT_INSTANCE, &addr, false, false);
+    /* start advertising subnet */
+    gnrc_ipv6_nib_change_rtr_adv_iface(netif, true);
+void dhcpv6_client_conf_done(unsigned iface)
+    gnrc_netif_t *netif = gnrc_netif_get_by_pid(iface);
+    /* inform upstream about subnets */

But the border router has it's own subnet for the 6LoWPAN too.
If the upstream router manages a /56 and hands the border router a /62 for use in the WPAN, nodes in the upstream network still have to route via the border router if the destination is in the /62 subnet, they must not assume the host is on-link. 

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