PPP_UI
h->control = PPP_UI; /* Unnumbered Info */
h->control = PPP_UI; /* Unnumbered Info */
if (h->control != PPP_UI)
h->control = PPP_UI; /* Unnumbered Info */
PPP_UI,
&& sc->sbuf[1] == PPP_UI)
PPP_UI,
&& sc->sbuf[1] == PPP_UI)