surf::LinkImpl* linkUp = surf_network_model->createLink(link_up, bw_out, 0, SURF_LINK_SHARED);
surf::LinkImpl* linkDown = surf_network_model->createLink(link_down, bw_in, 0, SURF_LINK_SHARED);
surf::LinkImpl* linkUp = surf_network_model->createLink(link_up, bw_out, 0, SURF_LINK_SHARED);
surf::LinkImpl* linkDown = surf_network_model->createLink(link_down, bw_in, 0, SURF_LINK_SHARED);