I have setup IPv6 environment and use test-v6.com to make some tests. I have some suggestions according to my test results: 1. In section 6, for the example result for “624-6to4”, I suggestion to use <2002:c000:0201::c000:0201> for the IPv6 address, instead of original <2001:db8::1>. <2002:c000:0201::c000:0201> is derived from “2002::/16+ <192.0.2.1>”, which I think is more easily understood by users. 2. In section 6, Interpretation for “624-6to4”, I have questions about the sentence: “Any web site that has an IPv6 presence, will be reached using 6to4 instead of native IPv4” I use win 7 with only IPv4 address configured, and thus 6to4 works. Then, I add an IPv6 default route to 6to4 relay router (anycast). The test result show that * IPv4 is preferred rather than Ipv6 6to4 (Only when connecting to IPv6-only servers, IPv6 6to4 will be used) * The test result of using test-v6.com show 624 (Help desk code) So, I think the interpretation does not match the real condition. The following is my test result and give you as a reference (if gif can be accepted and shown): [cid:image001.jpg@01D06BAB.3047DCE0] [cid:image002.png@01D06BAB.3047DCE0] Regards Yann-Ju ChungHwa Telecom. Co. Please be advised that this email message (including any attachments) contains confidential information and may be legally privileged. If you are not the intended recipient, please destroy this message and all attachments from your system and do not further collect, process, or use them. Chunghwa Telecom and all its subsidiaries and associated companies shall not be liable for the improper or incomplete transmission of the information contained in this email nor for any delay in its receipt or damage to your system. If you are the intended recipient, please protect the confidential and/or personal information contained in this email with due care. Any unauthorized use, disclosure or distribution of this message in whole or in part is strictly prohibited. Also, please self-inspect attachments and hyperlinks contained in this email to ensure the information security and to protect personal information.