This nugget is here only to tell you that if you want your SIIT or NAT64 to service both protocols on the same interface, you’re still covered. Jool can see packets coming from any interface, and can send packets via any interface. (It ignores loopback, though.)
This is the same setup as in the Stateful NAT64 Run, except from the fact that everyone is now sharing the same cord, and also I removed the redundant nodes because you get the point.
A and V are configured exactly as in their stateful run counterparts, so I’ll skip their commands. All that’s different is T now having all of its addresses on the same interface:
user@T:~# /sbin/ip link set eth0 up user@T:~# /sbin/ip address add 2001:db8::1/96 dev eth0 user@T:~# /sbin/ip address add 203.0.113.1/24 dev eth0 user@T:~# user@T:~# sysctl -w net.ipv4.conf.all.forwarding=1 user@T:~# sysctl -w net.ipv6.conf.all.forwarding=1 user@T:~# user@T:~# /sbin/modprobe jool user@T:~# jool instance add --netfilter --pool6 64:ff9b::/96
So basically, A and V share a cord, but they still can’t talk because they don’t speak the same language. That is, unless they ask T to translate their little chat:
user@A:~$ /bin/ping6 64:ff9b::203.0.113.16 PING 64:ff9b::203.0.113.16(64:ff9b::cb00:7110) 56 data bytes 64 bytes from 64:ff9b::cb00:7110: icmp_seq=1 ttl=63 time=10.0 ms 64 bytes from 64:ff9b::cb00:7110: icmp_seq=2 ttl=63 time=8.16 ms 64 bytes from 64:ff9b::cb00:7110: icmp_seq=3 ttl=63 time=8.39 ms 64 bytes from 64:ff9b::cb00:7110: icmp_seq=4 ttl=63 time=5.64 ms ^C --- 64:ff9b::203.0.113.16 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3003ms rtt min/avg/max/mdev = 5.645/8.057/10.025/1.570 ms