Minimum TTL?

Barry Margolin barmar at
Fri Feb 9 16:45:52 UTC 2018

In article <mailman.452.1518194404.749.bind-users at>,
 Reindl Harald <h.reindl at> wrote:

> > As long as you understand the implications of what you're doing?
> > 
> > The zone owner may be using short TTLs to implement load balancing
> > and/or quick failover. If you extend the TTLs, your users may experience
> > poor performance when they try to go to these sites using out-of-date
> > cache entries
> but that's my problem then and not yours - it's that simple

Sure, but the Internet was designed on a philosophy of cooperation. An 
ISP could also drop every other packet, and say "that's my problem, not 
yours", but we wouldn't consider that to be a reasonable way to run a 

IMHO you should at least be transparent about it, so your users know 
what they're in for.

Barry Margolin
Arlington, MA

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