ikev2_msg_send
int ikev2_msg_send(struct iked *, struct iked_message *);
if ((ret = ikev2_msg_send(env, &req)) == 0)
ret = ikev2_msg_send(env, &resp);
ret = ikev2_msg_send(env, &resp);
ret = ikev2_msg_send(env, &resp);
ret = ikev2_msg_send(env, &resp);
if (ikev2_msg_send(env, &resp) == -1)