Re: Fedora 33 System-Wide Change proposal: systemd-resolved

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On Monday, August 31, 2020 6:43:37 AM MST Ed Greshko wrote:
> On 2020-08-31 21:40, John M. Harris Jr wrote:
> 
> > On Monday, August 31, 2020 1:22:58 AM MST Ed Greshko wrote:
> > 
> >> On 2020-08-30 18:30, Andreas Tunek wrote:
> >>
> >>
> >>
> >>> On my F33 test system (new install yesterday) I can see my NAS but I
> >>> can't
> >>> connect to it. Could that be due to this change?
> >> 
> >> Could you me a bit more specific?
> >>
> >>
> >>
> >> I just installed from Fedora-Workstation-Live-x86_64-33-20200829.n.0.iso
> >> to
 a VM and everything seems working just fine for me.
> >>
> >>
> >>
> >> [egreshko@f33g ~]$ resolvectl
> >> Global
> >> 
> >>        LLMNR setting: resolve            
> >> 
> >> MulticastDNS setting: resolve            
> >> 
> >>   DNSOverTLS setting: no                 
> >>   
> >>       DNSSEC setting: no                 
> >>     
> >>     DNSSEC supported: no                 
> >>   
> >>   Current DNS Server: 192.168.122.1      
> >>   
> >>          DNS Servers: 192.168.122.1      
> >> 
> >> Fallback DNS Servers: 1.1.1.1            
> >> 
> >>                       8.8.8.8            
> >>                       1.0.0.1            
> >>                       8.8.4.4            
> >>                       2606:4700:4700::1111
> >>                       2001:4860:4860::8888
> >>                       2606:4700:4700::1001
> >>                       2001:4860:4860::8844
> >>           
> >>           DNS Domain: greshko.com        
> >>
> >>
> >>
> >> Link 2 (enp1s0)
> >> 
> >>       Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
> >>
> >>
> >>
> >> [egreshko@f33g ~]$ ll /etc/resolv.conf
> >> -rw-r--r--. 1 root root 74 Aug 31 10:33 /etc/resolv.conf
> >>
> >>
> >>
> >> [egreshko@f33g ~]$ cat /etc/resolv.conf
> >> # Generated by NetworkManager
> >> search greshko.com
> >> nameserver 192.168.122.1
> >>
> >>
> >>
> >> [egreshko@f33g ~]$ df -T
> >> Filesystem       Type   1K-blocks       Used  Available Use% Mounted on
> >> /dev/vda2        btrfs   32504832    6213600   26109168  20% /
> >> /dev/vda2        btrfs   32504832    6213600   26109168  20% /home
> >> /dev/vda1        ext4      999320     184228     746280  20% /boot
> >> nas:/volume1/aux nfs4  5621463168 1920182016 3701281152  35% /aux
> > 
> > Ed,
> >
> >
> >
> > Where did you set these fallback servers? This is something that you 
> > specifically chose to do, and not systemd, right?
> >
> >
> 
> 
> My understanding is the Fallback Servers are hard coded.  From the
> resolved.conf man page
 
>        FallbackDNS=
>            A space-separated list of IPv4 and IPv6 addresses to use as the
>            fallback DNS servers. Please see DNS= for acceptable format of
>            adddresses. Any per-link DNS servers obtained from systemd-
>            networkd.service(8) take precedence over this setting, as do any
> servers set via DNS= above or /etc/resolv.conf. This setting is hence only
> used if no other DNS server information is known. If this option is not
> given, a compiled-in list of DNS servers is used instead.

I thought we'd already addressed that months ago. Does everyone here realize 
we're about to ship a release with "fallback" to Google and Cloudflare DNS?

-- 
John M. Harris, Jr.

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