Re: Debian and FQDN lookup
Quoting Brian (ad44@cityscape.co.uk):
> On Fri 03 Apr 2015 at 14:29:49 -0600, Bob Proulx wrote:
>
> > Brian wrote:
> > > Bob Proulx wrote:
> > > > The debian-installer will set things up right with an entry such as
> > > > this one.
> > > >
> > > > 127.0.1.1 foo.example.com foo
> > >
> > > If 'Domain name' is blank you get '127.0.1.1 foo'.
> >
> > Ah, yes, I had left that out. We had discussed that point in a
> > previous email. However I don't think the domain should be left blank
> > for the installer. Certainly not for an email server.
> >
> > One of these days we should get together and create or update a
> > documentation page with all of the information on this topic all in
> > one place. :-) But there is already the fine Debian Reference
> > maintained by Osamu Aoki. All it takes is time and that seems in less
> > supply every day.
I agree. I think I may have stumbled on the same or a similar
discussion regarding 127.0.1.1 foo and I tried making changes
accordingly. The result of one of these was that I got a message about
my MTA, hostname and --fqdn so I reverted to having
#127.0.1.1 foo
192.168.1.19 foo.home foo
And I vaguely remember having problems when I moved a machine from
work to home and had to change all the networking parameters:
finding them all and knowing what to change them to. Files like
/etc/{networks,mailname}
> Every time I use d-i in expert mode I wonder what other people make of
> it. I was puzzled by it the very first time and even now think it is one
> of the most difficult fields to fill in because the background knowledge
> needed isn't immediately as apparent as it is with language or location,
> say. The installation manual is really of no help as it has little
> commentary on its significance,
>
> As an example, let us suppose your ISP in the UK is talktalk.co.uk. You
> put this as your domain name because that is all you can think of. After
> all, it is in your email address and you do not have your own domain.
> Your hostname is copernicus. So your canonical hostname becomes
> copernicus.bt.com, which doen't exist and doesn't resolve. Now - what
> harm is done? Leaving the field blank often gets you what your router
> provides; copernicus.lan in my case.
>
> The Debian Reference doesn't appear to have anything to say about domain
> name either.
I'm one of the many who use .home
https://tools.ietf.org/html/draft-cheshire-homenet-dot-home-00
and this paper points out that there's an awful lot of leakage onto
the Internet.
I think I/we ought to be using .local
http://tools.ietf.org/html/rfc6762
because this won't get onto the Internet.
Do you think there's time to get such advice into jessie's installer
for domestic users (assuming it's good advice)?
Cheers,
David.
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