session->value.cs_port[VLIB_TX] =
clib_host_to_net_u16 (trk0->ct_ep[VLIB_TX].ce_port);
session->value.cs_port[VLIB_RX] = udp0->src_port;
session->value.cs_port[VLIB_TX] =
clib_host_to_net_u16 (trk0->ct_ep[VLIB_TX].ce_port);
session->value.cs_port[VLIB_RX] = udp0->src_port;