Re: DNS Resolving issues. So for related just to Cox. But could be larger.

[bmanning () vacation karoshi com]

On Thu, Mar 06, 2014 at 08:07:55AM -0500, Rob Seastrom wrote:
> Nick Hilliard <nick () foobar org> writes:
>
> > >    haven't you heard about "anycast"??
> >
> > rs probably has.  The owner of 199.73.57.122, probably not.
>
> indeed.  there are many pieces of evidence that this is not an anycast
> prefix.  proof is left as an exercise to those who can perform
> traceroutes from multiple continents, run nmap -sP, log into
> route-views, or do some combination of the above.
>
> -r

        sorry for the poor attempt at humour...
        it was ancient practice to hang many names (not cnames)
        off a single IP address. all perfectly legal from a DNS POV.

rs.example.org. in a 10.10.10.53
nick.example.com. in a 10.10.10.53
bbss.isc.org. in a 10.10.10.53

        the punchline here was "anycasting" the address across multiple names.  
        nary a routing trick in sight or in play.

        Lame I know.

        as a tool to defeat the autobots who insist on "two nameservers"
        for a delegation - its kind of a clever poke in the eye w/ a sharp stick.

        Back to my oubliette

/bill