[mdlug] Server maintenance

[Adam Tauno Williams]

On Sat, 2012-11-17 at 15:32 -0500, Carl T. Miller wrote:
> On 11/17/2012 11:45 AM, Adam Tauno Williams wrote:
> > I think people generally use "propagate" to indicate the amount of 
> > time it takes for clients to realize the change. And I generally 
> > double the expected time when telling anyone else how long it will take.
> Yes, and propagate means to have offspring or to be something
> tangible that grows or moves.  DNS records don't do either of
> those things.  Promulgate is the word for the spread of the
> awareness of an intangible item, such as a law or a DNS record.
> Incidentally, the reason so many places say it takes 24 hours to
> promulgate is that Windows has a local cache where it keeps
> records for 24 hours regardless of the ttl of the record.

Yep,  hence my previous post regarding clients-that-ignore-TTL.  My
experience that in real-world implementations the honoring of the TTL is
rather hit-n-miss.