Fix blackhole route installation on BSD

1b2f8d62 · Grégoire Henry · Juliusz Chroboczek · 03d6d27a · 1b2f8d62
Commit 1b2f8d62 authored May 19, 2012 by Grégoire Henry Committed by Juliusz Chroboczek May 23, 2012
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kernel_socket.c kernel_socket.c +12 -3

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--- a/kernel_socket.c
+++ b/kernel_socket.c
@@ -412,10 +412,19 @@ kernel_route(int operation, const unsigned char *dest, unsigned short plen,
      return 0;

    if(operation == ROUTE_MODIFY) {
+        if(metric == KERNEL_INFINITY || newmetric == KERNEL_INFINITY) {
+            kernel_route(ROUTE_FLUSH, dest, plen,
+                         gate, ifindex, metric,
+                         NULL, 0, 0);
+            return kernel_route(ROUTE_ADD, dest, plen,
+                                newgate, newifindex, newmetric,
+                                NULL, 0, 0);
+        } else {
            metric = newmetric;
            gate = newgate;
            ifindex = newifindex;
        }
+    }

    kdebugf("kernel_route: %s %s/%d metric %d dev %d nexthop %s\n",
            operation == ROUTE_ADD ? "add" :