The IPv6 support checker function, inspect_ipv6_support(), first checks if Python is built with IPv6 using socket.has_ipv6. Next, we call the interfaces() function from the netifaces module. This gives us the list of all interfaces. If we call the ifaddresses() method by passing a network interface to it, we can get all the IP addresses of this interface. We then extract various IP-related information, such as protocol family, address, netmask, and broadcast address. Then, the address of a network interface has been added to the IPv6_address dictionary if its protocol family matches AF_INET6.