[97193] in North American Network Operators' Group
Re: NAT Multihoming
daemon@ATHENA.MIT.EDU (Donald Stahl)
Mon Jun 4 11:13:48 2007
Date: Mon, 4 Jun 2007 11:12:55 -0400 (EDT)
From: Donald Stahl <don@calis.blacksun.org>
To: Stephane Bortzmeyer <bortzmeyer@nic.fr>
Cc: Stephen Satchell <list@satchell.net>, nanog@merit.edu
In-Reply-To: <20070604080251.GC18676@nic.fr>
Errors-To: owner-nanog@merit.edu
>> The last time I renumbered, I found that quite a few people were not
>> honoring the TTLs I put in my DNS zone files. [...] Custom customer
>> zone files hosted elsewhere?
>
> Do not forget that applications have their own caches, too, and they
> typically ignore completely the DNS TTL. A typical Web brower calls
> getaddrinfo() once and use the IP address as long as it is not
> restarted.
Not to mention java's caching which has screwed me up more times than I
care to think about. I sincerley wish Sun had disabled it by default- I
really don't think it's the JRE's responsibility to cache name service
lookups- at least not by default.
-Don
