Slashdot: Providers Ignoring DNS TTL?

Thu Apr 21 00:31:04 UTC 2005

On Wed, 20 Apr 2005, Dean Anderson wrote:

> On Wed, 20 Apr 2005 sthaug at nethelp.no wrote:
> 
> > > I'd rather expect this sort of behavior with anycasted servers... 
> > 
> > Where do you see any connection between anycast and ignoring DNS TTL? Or is
> > this just part of your usual rant against anycast DNS service?
> 
> The data he showed isn't necessarilly "ignoring ttl".  If there are multiple
> anycasted caching servers behind a specific IP address, then those several
> cache's will each have a different state.  Since, [as I

I fail to see the correlation still.. anycasted caches should all be operating 
independently getting their DNS data from authoritative sources. 

If at any point one of them uses a TTL that it has not received from the 
authoritative source it is ignoring the ttl, where does anycast get involved 
with this particular problem?

thanks
Steve