NLF_EXT_ACK
return (NLF_EXT_ACK);
if ((npt->err_msg || npt->err_off) && nlp->nl_flags & NLF_EXT_ACK)
if (npt->err_msg != NULL && nlp->nl_flags & NLF_EXT_ACK)
if (npt->err_off != 0 && nlp->nl_flags & NLF_EXT_ACK)