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List:       fedora-devel-list
Subject:    Re: Fedora 33 System-Wide Change proposal: systemd-resolved
From:       Florian Weimer <fweimer () redhat ! com>
Date:       2020-09-02 6:22:06
Message-ID: 873640puk1.fsf () oldenburg2 ! str ! redhat ! com
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* John M. Harris, Jr.:

> On Tuesday, September 1, 2020 5:19:15 AM MST Florian Weimer wrote:
>> * John M. Harris, Jr.:
>> 
>> 
>> > Sure, those two companies will be thrilled, I'm sure. This is a huge 
>> > disservice to our users. Why in the world does systemd try to force DNS 
>> > servers when none are configured? If no DNS servers are configured, there
>> > 
>> > should be no DNS servers in use.
>> 
>> 
>> Acutally, the historic default is to use localhost (127.0.0.1).  This is
>> what an empty or missing /etc/resolv.conf file has always meant.
>> 
>> (Okay, there was apparently a time when localhost could also be reached
>> at 0.0.0.0, and that was the default before 127.0.0.1.  But that likely
>> predates the Linux networking stack.)
>
> Well, that was only reading host files, right? Or do you mean the
> system would actually perform lookup against itself?

It actually sends UDP packets to 127.0.0.1, port 53.

Thanks,
Florian
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