* Christian Huitema: > The order of5C records in a DNS response is, at best, a > hint. Relying on it as if it were a mandate to clients is a gamble. When you run RRset-based load balancing, you don't rely on servers preserving order, or reordering responses. It is completely sufficient that there is a certain amount of variation among resolver and application address selection. It has been repeatedly and independently observed that Rule 9 does not provide sufficient variance, in contrast to previous behavior. Rule 9 is also unfortunate because it means that after renumbering, server loads change in ways the operator cannot influence (except by requesting addresses with certain bit patterns, but I don't think anybody wants vanity IP addresses). -- Florian Weimer <fweimer@xxxxxx> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99 _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf