Ignore No-Path DAO if target is already reachable through a different route than the DAO sender
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@ -655,7 +655,7 @@ dao_input(void)
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if(lifetime == RPL_ZERO_LIFETIME) {
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/* No-Path DAO received; invoke the route purging routine. */
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if(rep != NULL && rep->state.saved_lifetime == 0 && rep->length == prefixlen) {
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if(rep != NULL && rep->state.saved_lifetime == 0 && rep->length == prefixlen && uip_ipaddr_cmp(&rep->nexthop, &dao_sender_addr)) {
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PRINTF("RPL: Setting expiration timer for prefix ");
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PRINT6ADDR(&prefix);
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PRINTF("\n");
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