# iifname "eth0" tcp dport 80-90 dnat to 192.168.3.2
ip test-ip4 prerouting
  [ meta load iifname => reg 1 ]
  [ cmp eq reg 1 0x30687465 0x00000000 0x00000000 0x00000000 ]
  [ payload load 1b @ network header + 9 => reg 1 ]
  [ cmp eq reg 1 0x00000006 ]
  [ payload load 2b @ transport header + 2 => reg 1 ]
  [ cmp gte reg 1 0x00005000 ]
  [ cmp lte reg 1 0x00005a00 ]
  [ immediate reg 1 0x0203a8c0 ]
  [ nat dnat ip addr_min reg 1 addr_max reg 0 ]

# iifname "eth0" tcp dport != 80-90 dnat to 192.168.3.2
ip test-ip4 prerouting
  [ meta load iifname => reg 1 ]
  [ cmp eq reg 1 0x30687465 0x00000000 0x00000000 0x00000000 ]
  [ payload load 1b @ network header + 9 => reg 1 ]
  [ cmp eq reg 1 0x00000006 ]
  [ payload load 2b @ transport header + 2 => reg 1 ]
  [ range neq reg 1 0x00005000 0x00005a00 ]
  [ immediate reg 1 0x0203a8c0 ]
  [ nat dnat ip addr_min reg 1 addr_max reg 0 ]

# iifname "eth0" tcp dport {80, 90, 23} dnat to 192.168.3.2
__set%d test-ip4 3
__set%d test-ip4 0
	element 00005000  : 0 [end]	element 00005a00  : 0 [end]	element 00001700  : 0 [end]
ip test-ip4 prerouting
  [ meta load iifname => reg 1 ]
  [ cmp eq reg 1 0x30687465 0x00000000 0x00000000 0x00000000 ]
  [ payload load 1b @ network header + 9 => reg 1 ]
  [ cmp eq reg 1 0x00000006 ]
  [ payload load 2b @ transport header + 2 => reg 1 ]
  [ lookup reg 1 set __set%d ]
  [ immediate reg 1 0x0203a8c0 ]
  [ nat dnat ip addr_min reg 1 addr_max reg 0 ]

# iifname "eth0" tcp dport != 23-34 dnat to 192.168.3.2
ip test-ip4 prerouting
  [ meta load iifname => reg 1 ]
  [ cmp eq reg 1 0x30687465 0x00000000 0x00000000 0x00000000 ]
  [ payload load 1b @ network header + 9 => reg 1 ]
  [ cmp eq reg 1 0x00000006 ]
  [ payload load 2b @ transport header + 2 => reg 1 ]
  [ range neq reg 1 0x00001700 0x00002200 ]
  [ immediate reg 1 0x0203a8c0 ]
  [ nat dnat ip addr_min reg 1 addr_max reg 0 ]

# dnat to ct mark map { 0x00000014 : 1.2.3.4}
__map%d test-ip4 b
__map%d test-ip4 0
	element 00000014  : 04030201 0 [end]
ip test-ip4 prerouting
  [ ct load mark => reg 1 ]
  [ lookup reg 1 set __map%d dreg 1 ]
  [ nat dnat ip addr_min reg 1 addr_max reg 0 ]

# dnat to ct mark . ip daddr map { 0x00000014 . 1.1.1.1 : 1.2.3.4}
__map%d test-ip4 b
__map%d test-ip4 0
	element 00000014 01010101  : 04030201 0 [end]
ip test-ip4 output
  [ ct load mark => reg 1 ]
  [ payload load 4b @ network header + 16 => reg 9 ]
  [ lookup reg 1 set __map%d dreg 1 ]
  [ nat dnat ip addr_min reg 1 addr_max reg 0 ]