diff --git a/src/core/ipv6/nd6.c b/src/core/ipv6/nd6.c
index 72a2523..37b91db 100644
--- a/src/core/ipv6/nd6.c
+++ b/src/core/ipv6/nd6.c
@@ -1294,6 +1294,22 @@
 }
 
 /**
+ * Clear the destination cache.
+ *
+ * This operation may be necessary for consistency in the light of changing
+ * local addresses and/or use of the gateway hook.
+ */
+void
+nd6_clear_destination_cache(void)
+{
+  s8_t i;
+
+  for (i = 0; i < LWIP_ND6_NUM_DESTINATIONS; i++) {
+    ip6_addr_set_any(&destination_cache[i].destination_addr);
+  }
+}
+
+/**
  * Determine whether an address matches an on-link prefix.
  *
  * @param ip6addr the IPv6 address to match
diff --git a/src/include/lwip/nd6.h b/src/include/lwip/nd6.h
index e4715ad..e6e2d9c 100644
--- a/src/include/lwip/nd6.h
+++ b/src/include/lwip/nd6.h
@@ -141,6 +141,7 @@
 
 void nd6_tmr(void);
 void nd6_input(struct pbuf *p, struct netif *inp);
+void nd6_clear_destination_cache(void);
 s8_t nd6_get_next_hop_entry(const ip6_addr_t *ip6addr, struct netif *netif);
 s8_t nd6_select_router(const ip6_addr_t *ip6addr, struct netif *netif);
 u16_t nd6_get_destination_mtu(const ip6_addr_t *ip6addr, struct netif *netif);