# filename data expression
# Kea has no filename extractor in libeval

# authoritative is mandatory
authoritative;

# empty configs are not accepted by Kea
default-lease-time 1800;

# by filename superclass
class "byfn" {
    match filename;
}

subclass "byfn" "boot00070e364819" {
    option host-name "test1";
}

# raw
option host-name = concat("host-", substring(filename, 4, 12));