NONE

no flag set.

The default value from Networkmanager global configuration is used. If such value is unset or still zero, the DHCP request will use standard FQDN flags, i.e. nm_dhcp_hostname_flag_fqdn_serv_update and nm_dhcp_hostname_flag_fqdn_encoded for IPv4 and nm_dhcp_hostname_flag_fqdn_serv_update for IPv6.