Of course, we'll be burning much more address space than we 'need' to, but we'll be adding 0 routing entries, even though we are multiply multi-homed. However, as I'm only a registry person and I "don't run real routers", it is possible I am missing something obvious that will result in this not working. If so, please let me know before I turn APNIC into slag...
What's the scarce resource we're trying to conserve this week? There is a provider in St. Louis which is trying to do something similar. Since people are buying it, the theory must sound good. In practice it makes things worse because you turn DNS into the router table. As DNS round-robins through the different provider addresses, you'll get addresses with the source and destination address pair from the same (or shortest path) provider to addresses pairs which need to transit another (or longest path) provider irregardless of the actual state of the network. Depending on the transit agreements between the providers to "heal" discontinuities doesn't work well. What's even worse, you have to depend on the quality of programmers. Since many programs only try the first IP address in the DNS response, you'll get more failures as the DNS round-robins through a down provider's address block. Unless you start make dynamic changes of your DNS records based on your routing state, blech. Maybe I missed something, and Paul Vixie intends to integrate BGP-5 and Bind-5.1.0. Under the heading, history repeats itself, sortlist isn't much of a solution either. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation
What's even worse, you have to depend on the quality of programmers. Since many programs only try the first IP address in the DNS response, you'll get more failures as the DNS round-robins through a down provider's address block. Unless you start make dynamic changes of your DNS records based on your routing state, blech. Maybe I missed something, and Paul Vixie intends to integrate BGP-5 and Bind-5.1.0.
Nope. Not only is DNS not a good directory system (see my comments on ".COM is full" on the ietf list last year), it's not a good routing system either. That it can be abused to either purpose is not significant, since 99% of the people and companies who will be on the Internet aren't here yet.
Under the heading, history repeats itself, sortlist isn't much of a solution either.
I coauthored <draft-gulbrandsen-dns-rr-srvcs-03.txt> just to fix sortlist.
participants (2)
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Paul A Vixie
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Sean Donelan