ident_lo           17 core/ngx_resolver.c     u_char  ident_lo;
ident_lo          982 core/ngx_resolver.c     ident = (query->ident_hi << 8) + query->ident_lo;
ident_lo         1750 core/ngx_resolver.c     query->ident_lo = (u_char) (ident & 0xff);
ident_lo         1826 core/ngx_resolver.c     query->ident_lo = (u_char) (ident & 0xff);