Is IPv4/IPv6 compatible?
IPv6 is not backward compatible with IPv4, and IPv4 hosts and routers will not be able to deal directly with IPv6 traffic and vice-versa. In fact that there will be extreme difficulties with address allocation and routing if the internet is to continue to run indefinitely using IPv4.
How many devices support IPv6?
In other words, this approach can expand the unique space from 32 to a theoretical maximum of 48 bits. Currently we use these 48 bits to allow 10 billion devices to communicate.
How do I know if my computer supports IPv6?
Check connection status
- For wired connection through a router, right-click “Ethernet”, and for wireless connection right-click “Wi-Fi”, and then click “Status”.
- Click “Details”.
- If you see an IP address for IPv6 within the window marked with a red box, you are connected to the IPv6 network.
Why is IPv6 not compatible with IPv4?
IPv4 and IPv6 are inherently incompatible with each other. A few basic reasons: the address space is completely different (IPv6 has 128 bit addresses, IPv4 has 32 bit addresses) the protocol header of IPv6 looks nothing like the protocol header of IPv4.
Do I need both IPv4 and IPv6?
You should use both IPv4 and IPv6 addresses. Nearly everyone on the Internet currently has an IPv4 address, or is behind a NAT of some kind, and can access IPv4 resources.