npppd_get_ppp_by_id
npppd_ppp *npppd_get_ppp_by_id(npppd *, u_int);
if ((ppp = npppd_get_ppp_by_id(_this->npppd, ppp_id[i]))
if ((ppp = npppd_get_ppp_by_id(_this->npppd,
ppp = npppd_get_ppp_by_id(_npppd, pppx->pppx_id);
if ((ppp = npppd_get_ppp_by_id(_this, ppp_id)) == NULL)