ipsec_clone_id
ipsec_clone_id(&msg->isakmp_sa->id_i,
ipsec_clone_id(&msg->isakmp_sa->id_r,
ipsec_clone_id(&exchange->id_i, &exchange->id_i_len,
ipsec_clone_id(&exchange->id_r, &exchange->id_r_len,
ipsec_clone_id(&sa->id_i, &sa->id_i_len,
ipsec_clone_id(&sa->id_r, &sa->id_r_len,
extern int ipsec_clone_id(u_int8_t **, size_t *, u_int8_t *, size_t);