[ NoAccessorMethod ]
[ Version ( since = "1.54" ) ]
public int preserve_on_down { get; set; }
This controls whether NetworkManager preserves the SR-IOV parameters set on the device when the connection is deactivated, or whether it resets them to their default value.
The SR-IOV parameters are those specified in this setting (the "sriov" setting), like the number of VFs to create, the eswitch configuration, etc.
If set to nm_sriov_preserve_on_down_no, NetworkManager resets the SR-IOV parameters when the connection is deactivated. When set to nm_sriov_preserve_on_down_yes, NetworkManager preserves those parameters on the device. If the value is nm_sriov_preserve_on_down_default, NetworkManager looks up a global default value in the configuration; in case no such value is defined, it uses nm_sriov_preserve_on_down_no as fallback.