# meta nfproto ipv4
ip test-ip4 input
  [ meta load nfproto => reg 1 ]
  [ cmp eq reg 1 0x00000002 ]

# meta nfproto ipv6
ip test-ip4 input
  [ meta load nfproto => reg 1 ]
  [ cmp eq reg 1 0x0000000a ]

# meta nfproto {ipv4, ipv6}
__set%d test-ip4 3
__set%d test-ip4 0
	element 00000002  : 0 [end]	element 0000000a  : 0 [end]
ip test-ip4 input
  [ meta load nfproto => reg 1 ]
  [ lookup reg 1 set __set%d ]

# meta nfproto != {ipv4, ipv6}
__set%d test-ip4 3
__set%d test-ip4 0
	element 00000002  : 0 [end]	element 0000000a  : 0 [end]
ip test-ip4 input
  [ meta load nfproto => reg 1 ]
  [ lookup reg 1 set __set%d 0x1 ]