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-rw-r--r--filter/filter.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/filter/filter.c b/filter/filter.c
index d784c253..98bae331 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -853,10 +853,29 @@ interpret(struct f_inst *what)
f_rta_cow();
{
struct rta *rta = (*f_rte)->attrs;
+ ip_addr ip;
+
switch (what->aux) {
case T_IP:
- * (ip_addr *) ((char *) rta + what->a2.i) = v1.val.px.ip;
+ ip = v1.val.px.ip;
+
+ /* "gw" attribute? */
+ if (what->a2.i == OFFSETOF(struct rta, gw))
+ {
+ neighbor *n = neigh_find(rta->proto, &ip, 0);
+ if (!n || (n->scope == SCOPE_HOST))
+ runtime( "Invalid gw address" );
+
+ rta->dest = RTD_ROUTER;
+ rta->gw = ip;
+ rta->iface = n->iface;
+ rta->nexthops = NULL;
+ rta->hostentry = NULL;
+ }
+ else /* or "from" attribute? */
+ rta->from = ip;
+
break;
case T_ENUM_SCOPE:
@@ -867,10 +886,12 @@ interpret(struct f_inst *what)
i = v1.val.i;
if ((i != RTD_BLACKHOLE) && (i != RTD_UNREACHABLE) && (i != RTD_PROHIBIT))
runtime( "Destination can be changed only to blackhole, unreachable or prohibit" );
+
rta->dest = i;
rta->gw = IPA_NONE;
rta->iface = NULL;
rta->nexthops = NULL;
+ rta->hostentry = NULL;
break;
default: