answer:Google does not block 6to4 traffic to ipv6.google.com. However, it is possible that you may experience difficulty accessing this website using 6to4 tunneling technology due to various reasons: 1. Compatibility issues: 6to4 tunneling can encounter compatibility problems with certain network configurations or routers. These issues can prevent proper communication between your device and ipv6.google.com. 2. Performance concerns: 6to4 can result in suboptimal performance compared to native IPv6 connectivity. Google may discourage or prioritize native IPv6 connections over 6to4 tunnels to provide a better user experience. 3. Network restrictions: Your network administrator or Internet service provider (ISP) may have implemented restrictions on certain types of traffic, including 6to4 tunnels. In such cases, it might not be Google specifically blocking the traffic, but rather a broader network policy. If you're having troubles accessing ipv6.google.com via 6to4, consider troubleshooting your network settings or reaching out to your network administrator or ISP for further assistance.

answer:I apologize for the confusion earlier. Based on your clarification, it appears that you are referring to a specific scenario where packets passed the 6to4 relay but are not reaching their destination on the side of Google. In such cases, there could be several potential reasons for this behavior: 1. Network configuration: Google may have specific network configurations in place that prioritize or restrict certain types of incoming traffic. It's possible that the configuration on their side is causing the packets to be dropped or blocked. 2. Firewall settings: Google's infrastructure might be equipped with firewalls or security measures that can unintentionally block certain types of traffic, including 6to4 traffic. These measures could be in place for security reasons or to optimize network performance. 3. Routing issues: It's also possible that there could be routing issues between your 6to4 relay and Google's network. Routing problems can cause packets to be misdirected, leading to connectivity issues. It's worth noting that Google generally encourages the use of native IPv6 connectivity instead of transition mechanisms like 6to4 due to potential performance and compatibility issues. However, without specific details about the network configuration and setup, it is difficult to provide an exact reason for the behavior you have described.

answer:If you are able to connect to the IPv6 address 2606:4700:4700::1111, which belongs to Cloudflare's public DNS resolver, it suggests that your IPv6 connectivity is working correctly. However, this does not necessarily imply that Google is blocking 6to4 traffic to ipv6.google.com. There could be several reasons why you are experiencing difficulties specifically with accessing ipv6.google.com via 6to4. It's possible that Google has implemented certain configurations or restrictions for this specific domain or that there are network issues between your 6to4 relay and Google's infrastructure. To further investigate the issue, you may consider performing network diagnostics, such as traceroutes or packet captures, to identify where the connection is being interrupted. Additionally, reaching out to Google support or your network administrator might be helpful in understanding any specific limitations or configurations on their side.

answer:That's a valid approach! Tunnelbroker.net offers IPv6 tunneling services that can help you establish connectivity to IPv6 networks. By creating a tunnel through tunnelbroker.net, you can bypass any potential issues related to 6to4 and directly access IPv6 resources. Using a tunneling service like tunnelbroker.net can be a reliable solution to enable IPv6 connectivity when native support is not available or problematic. It allows you to encapsulate IPv6 packets within IPv4, ensuring compatibility and seamless communication with IPv6-enabled sites and services. By setting up a tunnel through tunnelbroker.net and configuring your network settings accordingly, you should be able to access ipv6.google.com and other IPv6 resources without any restrictions.