On Fri, Dec 14, 2012 at 03:10:44PM -0600, Joe Antkowiak wrote: > On Fri, Dec 14, 2012 at 2:13 PM, Jason Castonguay <casto...@umd.edu> wrote: > > > The old address, which is in the middle of UMD's network, is going to be > > black-holed once the change is over. Nothing will be on that IP once we > > move the root off. The rest of UMD's network is staying put. This move > > is part of UMD's commitment to improve the service, so we can support > > DNS anycast. > > > > > Just a quick question....if the old block is going to be black-holed but > kept allocated...why does it need to be changed in the first place, or why > does the existing have to be disabled? (just have both addresses > active/responding?) > > Forgive me if I'm missing something.
because you would not accept a /30 cutout of the UMD /16 coming from some random IX in Singapore. (see Joe Ableys post earlier today on why legacy nodes are / have renumbered.) /bill