NAT Multihoming

Stephane Bortzmeyer bortzmeyer at
Mon Jun 4 08:02:52 UTC 2007

On Sun, Jun 03, 2007 at 07:33:45PM -0700,
 Stephen Satchell <list at> wrote 
 a message of 29 lines which said:

> 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

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