# add @map1 { ip6 saddr . ip6 daddr : meta mark }
ip6 test-ip6 input
  [ payload load 16b @ network header + 8 => reg 1 ]
  [ payload load 16b @ network header + 24 => reg 2 ]
  [ meta load mark => reg 3 ]
  [ dynset add reg_key 1 set map1 sreg_data 3 ]