Re: /etc/hosts and resolving of the local host/domainname - 127.0.0.1 vs. 127.0.1.1
On Wed, Jul 31, 2013 at 3:01 PM, Thomas Goirand <zigo@debian.org> wrote:
> On 07/31/2013 06:47 PM, Vincent Lefevre wrote:
>> On 2013-07-31 11:00:24 +0200, Vincent Bernat wrote:
>>> ❦ 31 juillet 2013 09:46 CEST, Thomas Goirand <zigo@debian.org> :
>>>> He did wrote it. 127.0.1.1 breaks because some daemon (many, according
>>>> to him) bind only on 127.0.0.1, and not 127.0.0.0/8 as they should.
>>>
>>> How a daemon could bind to 127.0.0.0/8? bind() only takes an IP address.
>>
>> Perhaps Thomas actually meant accept any address, then drop those
>> outside 127.0.0.0/8?
>
> Correct.
Using SO_BINDTODEVICE ? Does it is limited to root (some time ago it
was limited to root but now no mention on man 7 socket).
BTW how to detect unsafe usage of 127.0.0.1 ? codesearch of
INADDR_LOOPBACK is inconclusive.
>
>> But this wouldn't necessarily solve the
>> mentioned "problem" anyway.
>
> I'm not sure there's a problem anyway. I'm on the side of Steve, which
> is I think the current setup works quite well. Our users can do a
> minimum of configuration, that's what I expect from anyone running a
> server/daemon anyway (things who are aimed at our users should be using
> localhost anyway).
>
> Thomas
>
>
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