*: use an ifindex_t type, defined in lib/if.h, for ifindex values
diff --git a/ospf6d/ospf6_spf.c b/ospf6d/ospf6_spf.c
index 88e1285..858398e 100644
--- a/ospf6d/ospf6_spf.c
+++ b/ospf6d/ospf6_spf.c
@@ -225,7 +225,8 @@
ospf6_nexthop_calc (struct ospf6_vertex *w, struct ospf6_vertex *v,
caddr_t lsdesc)
{
- int i, ifindex;
+ int i;
+ ifindex_t ifindex;
struct ospf6_interface *oi;
u_int16_t type;
u_int32_t adv_router;
@@ -235,7 +236,10 @@
assert (VERTEX_IS_TYPE (ROUTER, w));
ifindex = (VERTEX_IS_TYPE (NETWORK, v) ? v->nexthop[0].ifindex :
- ROUTER_LSDESC_GET_IFID (lsdesc));
+ /* v is the local router & the interface_id is a local ifindex */
+ (ifindex_t) ROUTER_LSDESC_GET_IFID (lsdesc));
+ assert (ifindex >= 0);
+
oi = ospf6_interface_lookup_by_ifindex (ifindex);
if (oi == NULL)
{