From 301b6555aa61931d16ab06e5fdce07205ff8aab5 Mon Sep 17 00:00:00 2001
From: Martine Lenders <mail@martine-lenders.eu>
Date: Wed, 12 Dec 2018 10:35:41 +0100
Subject: [PATCH] lwip: use l2util_ipv6_iid_from_addr() instead of
 NETOPT_IPV6_IID

---
 Makefile.dep                          | 1 +
 pkg/lwip/contrib/netdev/lwip_netdev.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile.dep b/Makefile.dep
index 5fe8f4edd7..36e09558e2 100644
--- a/Makefile.dep
+++ b/Makefile.dep
@@ -434,6 +434,7 @@ endif
 
 ifneq (,$(filter lwip_sixlowpan,$(USEMODULE)))
   USEMODULE += lwip_ipv6_autoconfig
+  USEMODULE += l2util
 endif
 
 ifneq (,$(filter lwip_ipv6_autoconfig lwip_ipv6_mld,$(USEMODULE)))
diff --git a/pkg/lwip/contrib/netdev/lwip_netdev.c b/pkg/lwip/contrib/netdev/lwip_netdev.c
index 73ec8190c6..dbc3b59e5b 100644
--- a/pkg/lwip/contrib/netdev/lwip_netdev.c
+++ b/pkg/lwip/contrib/netdev/lwip_netdev.c
@@ -156,7 +156,9 @@ err_t lwip_netdev_init(struct netif *netif)
              * with full IIDs, so let's do it ourselves */
             addr = &(netif->ip6_addr[0]);
             /* addr->addr is a uint32_t array */
-            if (netdev->driver->get(netdev, NETOPT_IPV6_IID, &addr->addr[2], sizeof(eui64_t)) < 0) {
+            if (l2util_ipv6_iid_from_addr(dev_type,
+                                          netif->hwaddr, netif->hwaddr_len,
+                                          (eui64_t *)&addr->addr[2]) < 0) {
                 return ERR_IF;
             }
             ipv6_addr_set_link_local_prefix((ipv6_addr_t *)&addr->addr[0]);