CCP_ERROR
cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
#define CCP_ERR (CCP_ERROR | CCP_FATALERROR)
pkt->flags |= CCP_ERROR;
cp->flags &= ~CCP_ERROR;
cp->cp_flags |= CCP_ERROR;
cp->cp_flags &= ~CCP_ERROR;
#define CCP_ERR (CCP_ERROR | CCP_FATALERROR)
((x)->cp_flags & CCP_ERROR)