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Has anyone made a daemen that Forwarding IPv4 Ports to IPv6-only Hosts?
I know it can be done with socat, but has anyone wrote the software to daemenize the functionality and give it a configuration file similar to iptables-persistant? Forwarding the IPv4 packets makes so much more sense than running a dual stack to me because you don't have to use Internal IP addresses at all, or configure twice as many firewalls and routes.
Comments
HAProxy and alikes.
Pretty sure you need 'dual-stack' , since it is the OS kernel that munches the IP datagram first, anyway.
If you choose to do the forward in userspace(L7) , you might want to go with something simple and provably secure, like Putnam-fellow Colin Percival's spiped.
+No openssl dependency here, since it's just a symmetric AES encrypted pipe, based on a shared static key.
I think this is the easiest to automate via your CM tool of choice.
Yes, it's called 6tunnel, it can forward both ways (v4->v6, v6->v4).
I think you're right.
+1 spiped is excellent.