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v4 systems can only talk to other v4 systems. If there's a system that has only v4, it can tunnel v6 packets out to a tunnel gateway that will unwrap and forwa
by zlynx 9y ago
v4 systems can only talk to other v4 systems.
If there's a system that has only v4, it can tunnel v6 packets out to a tunnel gateway that will unwrap and forward them.
There are other protocol-specific tricks, like v4 DNS records that resolve to a HTTP reverse proxy, which forwards based on hostname and path to the real v6 server, while the v6 DNS records point directly to the v6 server.
- lisper 9y ago> v4 systems can only talk to other v4 systems. That depends on what you mean. A v4 packet can only be delivered unaltered to a v4 stack. But one can build a proxy server that tunnels TCP and UDP from a v4 network to a v6 network, so data can be passed from a v4 system to a v6 system without any software changes at either end.