I have been unable to configure my ASUS RT-N66U router to connect with my tunnel ID T125018. My router is running firmware 3.0.0.4.376_3861. A screenshot of my router settings page is here. Pings and traceroutes for IPv4 are below. I have tried pinging under IPv6; while I can reach the "LAN IPv6 Address" (in less than 1 ms) the tunnel endpoint shows "Destination Host Unreachable". I have tried swapping the server and client IPv6 addresses and I have tried changing the LAN IPv6 prefix to the subnet R223070 address I was given but have seen no change. I am running a Windows desktop and a Linux desktop as well as a laptop with both Windows (8.1) and Linux (Ubuntu 14.04 LTS) installed behind the router. All of the machines show normal IPv4 connectivity but "No Internet Access" for IPv6 although it looks as if they are getting valid IPv6 addresses from the router. I would greatly appreciate any help that anyone can offer. Thanks in advance----Eric. (EHB5-SIXXS) Microsoft Windows [Version 6.3.9600] (c) 2013 Microsoft Corporation. All rights reserved. C:\Users\eric>ping 2001:4830:1600:485::1 Pinging 2001:4830:1600:485::1 with 32 bytes of data: Reply from 2001:4830:1600:485::1: time<1ms Reply from 2001:4830:1600:485::1: time<1ms Reply from 2001:4830:1600:485::1: time<1ms Reply from 2001:4830:1600:485::1: time<1ms Ping statistics for 2001:4830:1600:485::1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\Users\eric>ping 2001:4830:1600:485::2 Pinging 2001:4830:1600:485::2 with 32 bytes of data: Destination host unreachable. Destination host unreachable. Destination host unreachable. Destination host unreachable. Ping statistics for 2001:4830:1600:485::2: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss), C:\Users\eric>ping 66.117.47.228 Pinging 66.117.47.228 with 32 bytes of data: Reply from 66.117.47.228: bytes=32 time=70ms TTL=49 Reply from 66.117.47.228: bytes=32 time=72ms TTL=49 Reply from 66.117.47.228: bytes=32 time=69ms TTL=49 Reply from 66.117.47.228: bytes=32 time=64ms TTL=49 Ping statistics for 66.117.47.228: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 64ms, Maximum = 72ms, Average = 68ms C:\Users\eric>tracert 66.117.47.228 Tracing route to iad0-sixxs.hotnic.net [66.117.47.228] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms router.asus.com [192.168.117.1] 2 * * * Request timed out. 3 * * * Request timed out. 4 27 ms 22 ms 23 ms 71.144.129.20 5 23 ms 22 ms 22 ms 12.83.86.129 6 30 ms 30 ms 30 ms gar27.dlstx.ip.att.net [12.123.16.77] 7 28 ms 27 ms 28 ms ae-9.r01.dllstx04.us.bb.gin.ntt.net [129.250.8.2 37] 8 34 ms 35 ms 28 ms ae-1.r20.dllstx09.us.bb.gin.ntt.net [129.250.2.1 0] 9 62 ms 61 ms 63 ms ae-1.r22.asbnva02.us.bb.gin.ntt.net [129.250.5.1 3] 10 63 ms 62 ms 63 ms ae-44.r06.asbnva02.us.bb.gin.ntt.net [129.250.6. 113] 11 62 ms 63 ms 62 ms xe-0-3-0-13.r06.asbnva02.us.ce.gin.ntt.net [168. 143.105.46] 12 64 ms 62 ms 62 ms 209.222.130.107 13 69 ms 71 ms 70 ms iad0-sixxs.hotnic.net [66.117.47.228] Trace complete. C:\Users\eric>