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

bmanning at vacation.karoshi.com bmanning at vacation.karoshi.com
Fri Mar 7 10:04:09 UTC 2014


On Thu, Mar 06, 2014 at 08:07:55AM -0500, Rob Seastrom wrote:
> 
> Nick Hilliard <nick at 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



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