Windows 7 tunnel does not work

[ach2623]

Follow the instructions to set up without any problems. But I can not use ipv6
need help
detail:


C:\Users\Administrator>netsh interface ipv6 delete interface ip6tunnel


C:\Users\Administrator>netsh interface teredo set state disabled
Ok.


C:\Users\Administrator>netsh interface ipv6 add v6v4tunnel interface=IP6Tunnel 1
15.204.131.55 216.218.221.6


C:\Users\Administrator>netsh interface ipv6 add address IP6Tunnel 2001:470:18:17
b::2
The object already exists.



C:\Users\Administrator>netsh interface ipv6 add route ::/0 IP6Tunnel 2001:470:18
:17b::1
The object already exists.



C:\Users\Administrator>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : 2651611561651-PC
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

PPP adapter ????:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : ????
   Physical Address. . . . . . . . . :
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 240e:f0:44:cc98:9c18:1c3f:809:1436(Prefer
red)
   Link-local IPv6 Address . . . . . : fe80::9c18:1c3f:809:1436%20(Preferred)
   IPv4 Address. . . . . . . . . . . : 115.204.131.55(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.255
   Default Gateway . . . . . . . . . : fe80::e224:7fff:fefb:5f7a%20
                                       0.0.0.0
   DHCPv6 IAID . . . . . . . . . . . : 333238048
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-4B-94-BF-00-1F-D0-99-CE-6C

   DNS Servers . . . . . . . . . . . : 240e:1c:200::1
                                       240e:1c:200::2
                                       202.101.172.35
                                       202.101.172.47
   NetBIOS over Tcpip. . . . . . . . : Disabled

Ethernet adapter ????:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek RTL8168C(P)/8111C(P) ?? PCI-E ???
?? NIC (NDIS 6.20) #2
   Physical Address. . . . . . . . . : 00-1F-D0-99-CE-6C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::9436:f2ef:7f66:af9%12(Preferred)
   Autoconfiguration IPv4 Address. . : 169.254.10.249(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 268443600
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-4B-94-BF-00-1F-D0-99-CE-6C

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter IP6Tunnel:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft Direct Point-to-point Adapater
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:470:18:17b::2(Preferred)
   IPv6 Address. . . . . . . . . . . : 2001:470:35:e69::2(Preferred)
   Link-local IPv6 Address . . . . . : fe80::31d8:131a:30d3:19dc%13(Preferred)
   Default Gateway . . . . . . . . . : 2001:470:35:e69::1
                                       2001:470:18:17b::1
   DNS Servers . . . . . . . . . . . : 240e:1c:200::1
                                       240e:1c:200::2
                                       202.101.172.35
                                       202.101.172.47
   NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Users\Administrator>netsh
netsh>int
netsh interface>ipv6
netsh interface ipv6>show int

Idx     Met         MTU          State                Name
---  ----------  ----------  ------------  ---------------------------
  1        4275  4294967295  connected     Loopback Pseudo-Interface 1
20          20        1480  connected     ????
13          25        1280  connected     IP6Tunnel
12        4245        1500  connected     ????

netsh interface ipv6>show int 12

Interface ???? Parameters
----------------------------------------------
IfLuid                             : ethernet_6
IfIndex                            : 12
State                              : connected
Metric                             : 4245
Link MTU                           : 1500 bytes
Reachable Time                     : 44000 ms
Base Reachable Time                : 30000 ms
Retransmission Interval            : 1000 ms
DAD Transmits                      : 1
Site Prefix Length                 : 64
Site Id                            : 1
Forwarding                         : disabled
Advertising                        : disabled
Neighbor Discovery                 : enabled
Neighbor Unreachability Detection  : enabled
Router Discovery                   : enabled
Managed Address Configuration      : enabled
Other Stateful Configuration       : enabled
Weak Host Sends                    : disabled
Weak Host Receives                 : disabled
Use Automatic Metric               : disabled
Ignore Default Routes              : enabled
Advertised Router Lifetime         : 1800 seconds
Advertise Default Route            : disabled
Current Hop Limit                  : 0
Force ARPND Wake up patterns       : disabled
Directed MAC Wake up patterns      : disabled

netsh interface ipv6>exit


C:\Users\Administrator>ping -6 bt.neu6.edu.cn

Pinging bt.neu6.edu.cn [2001:da8:9000::232] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 2001:da8:9000::232:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\Administrator> thans :) :) :)

[cholzhauer]

MTU issue?

ISP blocking proto41?

[ach2623]

I change “Ip6tunnel“ MTU=1480  then I can ping Gateway

C:\Users\Administrator>ping 2001:470:18:17b::1

Pinging 2001:470:18:17b::1 with 32 bytes of data:
Reply from 2001:470:18:17b::1: time=289ms
Reply from 2001:470:18:17b::1: time=285ms
Reply from 2001:470:18:17b::1: time=287ms
Reply from 2001:470:18:17b::1: time=287ms

Ping statistics for 2001:470:18:17b::1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 285ms, Maximum = 289ms, Average = 287ms

C:\Users\Administrator>tracert 2001:470:18:17b::1

Tracing route to ach2623-1.tunnel.tserv20.hkg1.ipv6.he.net [2001:470:18:17b::1]
over a maximum of 30 hops:

  1   289 ms   289 ms   288 ms  ach2623-1.tunnel.tserv20.hkg1.ipv6.he.net [2001:
470:18:17b::1]

Trace complete.
but
C:\Users\Administrator>ping -6 bt.neu6.edu.cn

Pinging bt.neu6.edu.cn [2001:da8:9000::232] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 2001:da8:9000::232:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),