PPP_FCSLEN
framemax += PPP_HDRLEN + PPP_FCSLEN;
#define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN)
PPP_FCSLEN : PPP_FCS32LEN;
PPP_FCS32LEN : PPP_FCSLEN;
tp - outmp->b_rptr < 2 + PPP_FCSLEN) {
#define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN)