define nic = eth0

flush ruleset

table inet nat {
        #
        # inbound
        #
        chain prerouting {
                type nat hook prerouting priority dstnat;

                iif $nic ip saddr   0/0 tcp dport 2222 dnat 10.0.0.22:22
                iif $nic ip6 saddr ::/0 tcp dport 2222 dnat [fc00::beef:22]:22
        }

        #
        # outbound
        #
        chain postrouting {
                type nat hook postrouting priority srcnat;

                ip saddr 10.0.0.0/24       oif $nic snat 192.168.122.21
                ip6 saddr fc00::beef:0/112 oif $nic snat baaf::baaf:21
        }
}