:: Re: [DNG] how to clear DNS cache
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Autore: Rick Moen
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To: dng
Oggetto: Re: [DNG] how to clear DNS cache
Am concurring, but quibbling on a minor detail, anyway.

Quoting Simon Hobson (linux@???):

> What is absolutely, 100%, not acceptable behaviour is what's been done
> - to silently do something that no sane admin would expect, and many
> people have objections to doing. Even worse is when there isn't a
> mechanism for turning this off.


Well, not quite. if you know *ix at all[0]:

# sed -i 's/^nameserver/#nameserver/' /etc/resolv.conf


To disable system DNS (but not /etc/hosts) entirely:

# cp /etc/nsswitch.conf /etc/nsswitch.conf-ORIGINAL
# sed -i 's/dns//g' /etc/nsswitch.conf


> Comparison with (for example) NTP defaulting to using pool.ntp.org by
> default are disingenuous. For that, the settings are there in ntp.conf
> where they can be seen and easily changed. So that is completely
> different.


Well, I would also _hope_ that you have NTP only if you elected to run
it. Unlike covert distro-installer additions to /etc/resolv.conf, NTP
involves running a network daemon.

[0] Admittedly, 'sed -i' inline editing assumes _GNU_ sed, but the BSD
people can bite me. ;->

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