update control {
       Cleartext-Password := 'hello'
}

update request {
	WiMAX-DHCPv4-Server := 192.0.2.23
}

if (WiMAX-DHCPv4-Server != 192.0.2.23) {
	update reply {
		Filter-Id := "fail-1"
	}
}

if (!reply:Filter-Id) {
	update reply {
		Filter-Id := "filter"
	}
}