SD_link_t *link_list; /* array of links, created only if
necessary in SD_link_get_list */
SD_link_t *recyclable_route; /* array returned by SD_route_get_list
SD_link_t *link_list; /* array of links, created only if
necessary in SD_link_get_list */
SD_link_t *recyclable_route; /* array returned by SD_route_get_list