How to concatenate subnet with port in a set?

Sorry, the code was unprettified in my initial email:

	1> set whitelist_ipv4_tcp {
	2>     type inet_service . ipv4_addr
	3>     elements = {
	4>      22 . 255.255.255.255,
	5>      22 . 255.255.255.0/24
	6>     }
	7> }

--etkaar