[ NoAccessorMethod ]
[ Version ( since = "1.56" ) ]
public int dnssec { get; set; }
Whether DNSSEC (dnssec) is enabled for the connection.
The permitted values are: "yes" (2) use DNSSEC and disable fallback, "allow-downgrade" (1) use DNSSEC but allow fallback if the server does not support it, "no" (0) don't ever use DNSSEC. The effect of "default" (-1) depends on the dns plugin used. Systemd-resolved uses its global setting in this case.
This feature requires a plugin which supports DNSSEC. Otherwise, the setting has no effect. One such plugin is systemd-resolved.