table ip x {
	map y {
		type ipv4_addr : interval ipv4_addr
		flags interval
		elements = { 10.141.10.0/24 : 192.168.2.2-192.168.2.4, 10.141.11.0/24 : 192.168.4.2/31,
			     10.141.12.0/24 : 192.168.5.10-192.168.5.20 }
	}

	chain y {
		type nat hook postrouting priority srcnat; policy accept;
		snat ip interval to ip saddr map @y
	}
}