> So the idea would be to have something like > msync-v6.centos.org::CentOS-v6, and ask you to provide us the ipv6 > address for your mirror (we can already do that in advance if you > advertise AAAA record on your side for your mirror) and so it would be > an "opt-in" thing (at least as a start) The separate DNS ensures that people will only get what they ask for (v4 or v6), but why have a separate module name? Put both v4 and v6 acls on the CentOS module and clients will get the one matching the DNS name they use. Scott.