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I am new in embedded systems and trying to add support the ipv6 network availability in my new product but I have understood that,

First of all, My system is connected to IPv4 ISP and I want to communicate with the System with IPv6 address, So I will require tunnel broker, which will make IPv6 network available for my IPv4 PC. So when I am trying to communicate with the system IPv6 network my data(packets) will be sent through the tunnel broker which will work as NAT and drop the IPv4 header and forward the IPv6 header and data to the IPv6 network

But I have a doubt that, If my PC has a IPv4 address and I am trying to communicate with the system with IPv4 address then will my packets(data) be transferred through the tunnel broker.

Thanks for your suggestions in advance.

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up vote 2 down vote accepted

If your have an IPv6 tunnel broker then your IPv6 packets will be put inside IPv4 packets. Those packets are then sent to the IPv4 address of the tunnel broker, where the IPv4 header is removed and the inner IPv6 packet is forwarded to the IPv6 internet as usual. No NAT is involved.

IPv4 is completely independent of IPv6. IPv4 packets will in no way be affected when using an IPv6 tunnel broker.

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Thanks Sander for your reply, Btw I figured out the solution. –  nyk_mat Oct 19 '13 at 11:03
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