DeflateSetOptsOutput(struct lcp_opt *o, const struct ccp_config *cfg)
DeflateSetOptsOutput(struct fsm_opt *o, const struct ccp_config *cfg)
DeflateSetOptsOutput(struct lcp_opt *o, const struct ccp_config *cfg){  if (o->len != 4 || (o->data[0] & 15) != 8 || o->data[1] != '\0')    return MODE_REJ;  if ((o->data[0] >> 4) + 8 > 15) {    o->data[0] = ((15 - 8) << 4) + 8;    return MODE_NAK;  }  return MODE_ACK;}