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I have reset my linksys router, and now my internet is horribly slow. please check details from command prompt below and tell me what's wrong. Thanks.

Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Think>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Think-PC Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Peer-Peer IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : Home

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter Physical Address. . . . . . . . . : 08-3E-8E-A6-74-09 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Description . . . . . . . . . . . : TAP-Windows Adapter V9 Physical Address. . . . . . . . . : 00-FF-8D-03-85-AB DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : Home Description . . . . . . . . . . . : Broadcom 802.11n Network Adapter Physical Address. . . . . . . . . : 08-3E-8E-A6-74-09 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::6d26:5dca:5dec:3e11%12(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 20 December 2013 07:19:53 Lease Expires . . . . . . . . . . : 21 December 2013 07:19:53 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DHCPv6 IAID . . . . . . . . . . . : 352861838 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-E7-A5-EE-B8-88-E3-E8-81-D6

DNS Servers . . . . . . . . . . . : 208.67.222.222 192.168.1.1 NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Home Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller Physical Address. . . . . . . . . : B8-88-E3-E8-81-D6 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6abd:817:129f:3f57:fe9b(Prefe rred)
Link-local IPv6 Address . . . . . : fe80::817:129f:3f57:fe9b%21(Preferred) Default Gateway . . . . . . . . . : :: NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter 6TO4 Adapter:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft 6to4 Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.Home:

Connection-specific DNS Suffix . : Home Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::5efe:192.168.1.100%24(Preferred) Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : 208.67.222.222 192.168.1.1 NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter isatap.{8D0385AB-841D-4FA3-A3AB-08FA1E6B0EE4}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter #5 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{2960ADF4-79DD-44C8-8794-6033DE9AA0CB}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter #6 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\Think>

C:\Users\Think>ipconfig /all

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How long has this been happening for? It seems unlikely that a setting of your router is making your internet slow, I'd bet that you're probably just having some transient issue with your internet that happens to have occurred after you reset it. –  Patrick Collins Dec 21 '13 at 1:36
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1 Answer 1

You have Teredo enabled, but your system hasn't correctly identified your public IPv4 address. This is probably due to a double NAT situation (you are behind two home routers both doing NAT, or you have one router and your ISP is also NATting your connection).

Since this gives you a mostly-nonfunctional or completely broken IPv6 address, and IPv6 is preferred to IPv4, this will slow down your connectivity to any IPv6 enabled web site (Google, Facebook, many others).

I always recommend disabling Teredo, ISATAP and 6to4, all of which are IPv6 transition technologies with various pitfalls, unless you actually intend to use them.

Open an elevated command prompt by right-clicking the Command Prompt icon and selecting Run as Administrator, and enter the following commands:

netsh int ipv6 isatap set state disabled
netsh int ipv6 6to4 set state disabled
netsh int teredo set state disabled

Each should return The command completed successfully.

Then restart your computer.

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Hi,I should add that my linksys router is connected to a cisco 871W router which is connected to the internet. is it possible that these 2 devices are conflicting with one another? –  Jaime Dec 21 '13 at 2:49
    
Not, but it definitely sounds like a double NAT scenario. Try the above and report back. –  Michael Hampton Dec 21 '13 at 2:50
    
@Jaime Don't keep us in suspense. What happened? –  Michael Hampton Feb 15 at 19:40
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