LN_NEXT
nextaddr = LN_NEXT(newlinkp);
(void) memcpy(LN_NEXT(prevlinkp), nextkey, nextsize);
nextkey = ((nextsize > 0) ? LN_NEXT(dellinkp) : NULL);
debug_print_key(fp, "next", "", LN_NEXT(linkp), LN_NEXT_LEN(linkp));
nextkey = LN_NEXT(new_linkp);
len = fill_link_key(LN_NEXT(lastlinkp), dfh, name);
len = fill_link_key(LN_NEXT(linkp), &fhrecp->dfh,