Re: Does mDNS play well in regular DNS env?

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On Sat, Nov 5, 2016 at 1:11 PM, Louis Lagendijk <louis@xxxxxxxxxx> wrote:
> On Fri, 2016-11-04 at 23:47 +0200, Tom H wrote:
>> On Fri, Nov 4, 2016 at 11:26 PM, Samuel Sieb <samuel@xxxxxxxx> wrote:
>>> On 11/04/2016 02:12 PM, Tom H wrote:
>>>> On Fri, Nov 4, 2016 at 9:58 PM, Michael B Allen <ioplex@xxxxxxxxx
>>>>> wrote:
>>>>>
>>>>> Of course my local network is a .local domain so it seems at
>>>>> least in
>>>>> my case mdns cannot really be used effectively.
>>>>
>>>> That's the problem. ".local" is the default mdns domain.
>>>>
>>>> You can change it by setting "domain-name=something_else" in
>>>> "/etc/avahi/avahi-daemon.conf".
>>>
>>> Although that would immediately make you incompatible with all the
>>> devices
>>> you're probably wanting to talk to. :-)
>>
>> If the ".local" devices that you're connecting to are served by
>> regular dns, it's not a problem.
>>
> this is only partly true. You loose the service discovery features of
> mDNS. The OP noticed that mDNS helped setting up the printer (using
> mDNS discovery). mDNS is nice for discovery of devices and the services
> they offer.

Not if you change every one of our devices.


> It is a best practice to leave .local for mDNS. Even Microsoft
> recommends now against using .local https://en.wikipedia.org/wiki/.loca
> l offers some good information on the subject.
>
> And for DNS-domains you better use only officially registered domains,
> do not invent your own domain names. Somebody may register the TLD you
> invented. Or the IETF might define it for some special purpose.
>
> I heard of a DSL-modem vendor that used .box for local names. And guess
> what: somebody registered .box as an official top level domain....

IIRC, Lennart mentioned on fedora-devel@ ".box" as the local domain
used by the most popular brand of wifi modems in Germany. It's not
that big a deal unless, for example, I have a system on my lan called
tom.box and I or someone else has a tom.box on the net. Maybe they're
switch to ".fritzbox".
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