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It is likely that for the forseeable future your ISP will put some mechanism in place to allow IPv4-only clients on your network to access resources on the IPv4 internet. As the IPv4 crisis bites deeper ISPs will increasingly turn to mechanisms that allow them to provide you with access to resources on the IPv6 internet without giving you a dedicated public IPv4 address. Eventually I would expect such mechanisms to be phased out but likely not for a long time.

It is likely that for the forseeable future your ISP will put some mechanism in place to allow IPv4-only clients on your network to access resources on the IPv4 internet. As the IPv4 crisis bites deeper ISPs will increasingly turn to mechanisms that allow them to provide you with access to resources on the IPv4 internet without giving you a dedicated public IPv4 address. Eventually I would expect such mechanisms to be phased out but likely not for a long time.

It is likely that for the forseeable future your ISP will put some mechanism in place to allow IPv4-only clients on your network to access resources on the IPv4 internet without giving you a dedicated public IPv4 address. Eventually I would expect such mechanisms to be phased out but likely not for a long time.

It is likely that for the forseeable future your ISP will put some mechanism in place to allow IPv4-only clients on your network to access resources on the IPv4 internet. As the IPv4 crisis bites deeper ISPs will increasingly turn to mechanisms that allow them to provide you with access to resources on the IPv6 internet without giving you a dedicated public IPv4 address. Eventually I would expect such mechanisms to be phased out but likely not for a long time.

There are at least three options available to the ISP for doing this.

• Assign you a private V4 IP and run a conventional V4 NAT at the ISP level.
• Use "ds-lite" which tunnels IPv4 packets over IPv6 to a special NAT at the ISP.
• Use "464XLAT" where your router performs a stateless NAT46 and then the ISP performs stateful NAT64.

Your router may need replacement or a firmware upgrade to support the latter two options.

There are at least five options available to the ISP for doing this.

• Assign you a private V4 IP and run a conventional V4 NAT at the ISP level.
• Use "ds-lite" which tunnels IPv4 packets over IPv6 to a special NAT at the ISP.
• Use "464XLAT" where your router performs a stateless NAT46 and then the ISP performs stateful NAT64.
• Use "map-e", in this system each client is assigned an IP address with a restricted set of ports. The client's router performs NAT using the restricted port set and then tunnels the packets over IPv6 to a special device at the ISP. Traffic returning to the client is encapsulated in IPv6 and then sent to the relavent client based on IP and port.
• Use "map-t", similar to MAP-e the client gets a restricted port set, but rather than being encapsulated the traffic is translated to IPv6 for it's journey over the ISPs access network.

Your router may need replacement or a firmware upgrade to support the latter four options.

The advantage of the latter two options is that the ISPs equipment is "mostly stateless", meaning that asymmetric routing and re-routes won't break things.