PPTP_ACK_CHI
a->ato = a->rtt + PPTP_ACK_CHI(a->dev);
a->ato = a->rtt + PPTP_ACK_CHI(a->dev);
hpriv->ato = hpriv->rtt + PPTP_ACK_CHI(hpriv->dev + 2);
hpriv->ato = hpriv->rtt + PPTP_ACK_CHI(hpriv->dev);