Hi all. I am using Windows 7 machine and I am testing ipv6 connectivity with other Windows 7 machines through Teredo protocol. I noticed that ipv6 is installed by default on this system and from address header I can conclude that ipv6 address on my machine is global. The problem arise when trying to ping other machine which also have global ipv6 address. I am getting a message: request timed out. I don't have third party firewall installed on my machine and I tried few things with windows firewall in order to enable echo request. I tried it manualy with command: netsh firewall set icmpsetting 8 enable and also through gui but I still cannot ping other machines successfuly. I have nod32 antivirus installed, but even with disabled antivirus pinging also fails. Thanks

I believe ipv6 is also limited by the router and isp, if neither of these support ipv6, you wont be able to ping past them... JL

Hi, I would like to share the following documents: Test IPv6 connectivity by using the ping command Troubleshooting IPv6 IPv6 for Microsoft Windows: Frequently Asked Questions Best Regards DalePlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Thanks for reply, but I still cannot make it work. There is a thing I read on these documents that protocol 41 can cause the problem, but I think this is not the case here since I am using Windows Firewall and router is working fine with ipv6 addresses when testing with XP (sp3) machines...

Can you ping through IPv4? Check if all those devices are belonged to the same subnet. Please run the command: Ipconfig /all to output the network configuration and reply in your post. Best Regards Dale Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Yes, I can successfully ping ipv4 addresses. Here is an output of ipconfig /all: Windows IP Configuration Host Name . . . . . . . . . . . . : test-PC Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Wireless LAN adapter Wireless Network Connection 2: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : D-Link AirPlus G DWL-G122 Wireless USB Ad apter(rev.C) Physical Address. . . . . . . . . : 00-1E-58-B0-9F-84 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::1526:5800:a284:54cb%13(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.64(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Thursday, September 09, 2010 4:45:12 PM Lease Expires . . . . . . . . . . : Thursday, September 09, 2010 5:45:11 PM Default Gateway . . . . . . . . . : 192.168.1.254 DHCP Server . . . . . . . . . . . : 192.168.1.254 DHCPv6 IAID . . . . . . . . . . . : 419438168 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-AF-88-82-00-0F-B0-CE-7E-72 DNS Servers . . . . . . . . . . . : 192.168.1.254 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter isatap.{B50D478D-399D-426B-A27F-0B392BD3A7D1}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 9: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fd:3c91:644:aaa1:9c4b(Prefe rred) Link-local IPv6 Address . . . . . : fe80::3c91:644:aaa1:9c4b%17(Preferred) Default Gateway . . . . . . . . . : :: NetBIOS over Tcpip. . . . . . . . : Disabled

What is the brand and model of the router? Please check in Windows 7 compatibility center to verify if it is compatible with Windows 7. Meanwhile, try to ping other nodes with the same zoneID and see if it works. Best Regards DalePlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.