Possible to Use IPv4 and IPv6 at the same time?
Solution 1
It depends in what context you're referring to.
If you're asking whether a given NIC on a given OS can have both an IPv4 and IPv6 address at the same time, yes. This is more "coexisting" than "using simultaneously". Think of them as parallel network stacks -- network traffic will use one or the other but not both.
If you're asking whether a given application can access a network resource with both at the same time, kinda-sorta-maybe-ish. There are methods to allow interoperability and communication between the two, but they are 2 completely separate protocols.
This great article "Interoperability between IPv6 and IPv4" covers it pretty well.
Solution 2
IPv6 and v4 can "work simultaneously" through the use of tunneling. The wikipedia page here talks about it. I also suggest you read their page on IPv6 transitioning here they go into more specific descriptions on how they use tunneling for ipv6
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Comments
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d3vdpro over 1 year
Can IPv6 and IPv4 work simultaneously?
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Synetech over 14 yearsThe site works fine for me when I allow HTTP access through my IP blockers.
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Peter Cordes over 14 yearsfirefox is at least supposed to be able to browse v6 only sites and v4 only sites. It tries DNS lookups for v4 and v6 (A and AAAA) in parallel, and then decides which one to use.
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Jonathan Ray over 6 yearswith the same chrome browser, bing.coms say my ip is something v4 and google.com says my ip is something v6. Why would chrome be configured to use both at the same time? How can a website force the browser to use one or the other?