nan_lo             23 core/ngx_resolver.c     u_char  nan_lo;
nan_lo            985 core/ngx_resolver.c     nan = (query->nan_hi << 8) + query->nan_lo;
nan_lo           1757 core/ngx_resolver.c     query->nan_hi = 0; query->nan_lo = 0;
nan_lo           1833 core/ngx_resolver.c     query->nan_hi = 0; query->nan_lo = 0;