PPPCTL_IERROR
if (*mp->b_rptr == PPPCTL_IERROR) {
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);
if (*mp->b_rptr == PPPCTL_IERROR) {
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);
(void) putnextctl1(q, M_CTL, PPPCTL_IERROR);