Re: [DNSOP] Status of "let localhost be localhost"?

"Paul Hoffman" <paul.hoffman@vpnc.org> Sat, 12 August 2017 19:03 UTC

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From: "Paul Hoffman" <paul.hoffman@vpnc.org>
To: "Richard Barnes" <rlb@ipv.sx>
Cc: dnsop <dnsop@ietf.org>
Date: Sat, 12 Aug 2017 12:03:44 -0700
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Subject: Re: [DNSOP] Status of "let localhost be localhost"?
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On 12 Aug 2017, at 11:44, Richard Barnes wrote:

> On Sat, Aug 12, 2017 at 2:36 PM, Paul Hoffman <paul.hoffman@vpnc.org> 
> wrote:
>
>> On 12 Aug 2017, at 10:14, Ted Lemon wrote:
>>
>> El 12 ag 2017, a les 13:09, John Levine <johnl@taugh.com> va 
>> escriure:
>>>
>>>> Right.  That's why it's long past time that we make it clear that
>>>> non-broken resolvers at any level will treat localhost as a special
>>>> case.  As you may have heard, we are not the Network Police, but we 
>>>> do
>>>> publish the occasional document telling people what to do if they 
>>>> want
>>>> to interoperate with the rest of the Internet.
>>>>
>>>
>>> With respect, John, the issue I raised here isn't interop.  It's 
>>> security.
>>>
>>
>> It's security through interop. It's causing systems that want to hope 
>> that
>> "localhost" has a particular meaning that has security implications 
>> to have
>> a better chance that their hope is fulfilled.
>
>
> And giving systems that want to ensure that they never mistake 
> "localhost"
> for something other than loopback to have a better chance that they 
> won't
> break things.

Sorry, yes: that too. It applies to hopefulness on both sides.

--Paul Hoffman