[Gllug] /etc/hosts caching

[Ian Northeast]

Doug Winter wrote:

> Seconded.  nscd is a major pain in the arse.  It gave me immense grief
> when it first came out with Solaris (2.4 I think?  Maybe 2.5.1?).  Kill
> it and kill it dead.
> 
> Microsoft hasn't realised this yet, and has it's own DNS cache in win2k
> (dunno about me or xp or whatever it's called).  Bizarrely it even
> caches negatives, which can cause immense problems in networks with
> shonky dns servers (i.e. Microsoft DNS Server).

And ignores TTLs including negative ones, and....

I've often had problems reported from the Windows guys when I've made 
DNS changes. I just ask if they're running NT/2K/XP and if so tell them 
to reboot. Strangely (or not) they never seem to consider this to be an 
unreasonable request. I would consider it unreasonable if they ever 
asked me to reboot one of my servers, whether Linux or UNIX.

I understand that Windows can be "fixed" in this respect with an 
undocumented registry hack but I prefer not to explore these waters. And 
it's not my job:)

But Linux is not so stupid and I would be extremely surprised if I ever 
had to reboot a Linux machine to pick up a name change of any sort.

Regards, Ian






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