A dual stack network is a networking approach where both IPv4 and IPv6 protocols operate simultaneously on the same infrastructure. This allows devices to communicate using either protocol, ensuring backward compatibility while transitioning to IPv6. The transition from IPv4 to IPv6 is essential because IPv4 addresses are exhausted, and IPv6 offers improved performance, security, and scalability for modern networks. Learn more: https://en.wikipedia.org/wiki/Dual_Stack_Network