"Atomic Configuration" ( https://nicmx.github.io/Jool/en/config-atomic.html#nat64 ) shows the example configuration for NAT64, but actually it is not feasible.

This configuration contains a BIB for TCP port 80 as following:

  {
  	"protocol": "TCP",
  	"ipv6 address": "2001:db8::1#80",
  	"ipv4 address": "192.0.2.1#80"
  }, {

but the configuration of pool4 contains an entry for TCP having only 61001-62000 port ranges.

  {
  	"comment": "mark, port range and max-iterations are optional.",
  	"protocol": "TCP",
  	"prefix": "192.0.2.1/32"
  }, {

Jool requires that incoming IPv4 packets must match any pool4 entries. https://github.com/NICMx/Jool/blob/master/src/mod/common/steps/filtering_and_updating.c#L526

Therefore the BIB mentioned above is not workable and that's why I think the configuration is not feasible.