[Linux-aus] DNS routing and the luv.asn.au domain

[Russell Coker]

DNS=144.76.186.21
Domains=luv.asn.au

If you add the above 2 lines to the end of /etc/systemd/resolved.conf (or put 
them in a separate file in the /etc/systemd/resolved.conf.d/ directory) and 
run "sudo systemctl restart systemd-resolved.service" you will have a separate 
DNS configuration for the luv.asn.au domain.

Note that you can't have multiple separate DNS servers for different domains 
using the above, so this won't give what you want if you already have a 
private DNS server.

After setting up the domain the command resolvectl should give output like the 
following:

Global
         Protocols: +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
  resolv.conf mode: stub
       DNS Servers: 144.76.186.21
        DNS Domain: luv.asn.au

Link 2 (mb)
    Current Scopes: none
         Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/
unsupported
     Default Route: no

Link 3 (wifi)
    Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
         Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/
unsupported
       DNS Servers: 8.8.8.8
        DNS Domain: coker.com.au
     Default Route: yes


This shows that the "Default Route" for DNS is 8.8.8.8 while the route for 
luv.asn.au is 144.76.186.21

This will allow it to keep working for you until we get the domain renewed.  
NB Make sure you remove this after the renewal.

The resolvectl command is supposed to be able to set this and I have done it 
in the past, but I can't work it out from the man page and the google hits 
haven't turned up anything useful.  Anyone know how to use resolvectl to do 
this?  Before anyone says "read the source", I have read quite a bit of 
systemd source and it is not easy for outsiders to understand.

-- 
My Main Blog         http://etbe.coker.com.au/
My Documents Blog    http://doc.coker.com.au/