- Expose Network Manager per-connection setting for DNS-over-TLS. Support all
four values: default, no, opportunistic, and yes.
- Create a new collapsible section all 'Privacy' for this setting the connection
create/edit form. Strictly speaking this is related to security and censorship
resistance too.
- Don't show the DoT field for PPPoE connection types are DNS servers are not
relevant.
- Show the status of DoT for a connection in the connection status page.
Tests:
- In all Add New Connection forms except PPPoE form, the privacy
section shows up as expected.
- For each value for DoT, create a new connection and set the value for DoT to the
desired value and observe that the connection status page shows DoT to the set
value.
- For each value for DoT, edit an existing connection and set the value for the
DoT to the desired value and observe that the connection status page shows DoT
to the set value.
- Connection status page shows the values for DoT as expected.
- Update the primary Internet connection for the machine. Set the value to 'yes'
and notice that DNS resolutions fail. Set the value to 'opportunistic' or 'no'
and the DNS resolutions pass. In each case, 'resolvectl' shows the correct DoT
value for the connection. When 1.1.1.1 is set as DNS server, all values of DoT
in the connection succeed.
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Veiko Aasa <veiko17@disroot.org>
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