int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
ipsec_add_del_ipsec_gre_tunnel_args_t *
int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args);
int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
ipsec_add_del_ipsec_gre_tunnel_args_t *