# suffix data expression
# in fact ISC DHCP suffix can be reduced into Kea substring

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

# use suffix in a reductible match
class "reductible" {
    match suffix(option host-name, 3);
}

subclass "reductible" "com" {
    option domain-search "example.com";
}

subclass "reductible" "org" {
    option domain-search "example.org";
}

# reduce literals too
class "literal" {
    match if option domain-name = suffix("www.example.com", 3);
}

# raw
option domain-name = suffix(option domain-name, 3);