[syslog-ng] add-contextual-data()

Could I leverage this type of CSV to add VLAN ID and VLAN description tags if I already have filter f_192_168_1_0 { netmask(192.168.1.0/24);}; VLAN_Descriptions.csv VLANID, VLAN Description, subnet/24 43, Database_#14141, 192.168.1.1/24 filter f_192_168_1_0 { netmask(192.168.1.0/24); add-contextual-data( selector($IP is in f_192_168_1_0 or something specific?????/) database(“/opt/syslog-ng/etc/VLAN_Descriptions.csv") default-selector("unknown-hostname") ); };