Best Troubleshooting Tool for a Home Network

I updated to Windows 10 and now on the upgraded machine I get a message that more than one of NAT device exists on the network and this (seems) to be related to problems on that machine leading to suddenly being disconnected from the internet. Usually in the middle of an important video conference call.

The home network has two routers (we have children with their own router) and miscellaneous other Internet of Things devices. How can I best figure out what the problem is?
Peter ForsterWebsite DevelopmentAsked:
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David SankovskySenior SysAdminCommented:
well according to your error message, you are connected to both routers, and most likely they both use the same internal segment (makes sense if both routers are from the same brand).

I'd make sure that if you are connected using a wireless connection, the two networks have different SSIDs (different passwords is a good idea as well).

It could also be helpful if you could attach the output of the following command in CMD with elevated permissions:
route print

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This can help us help you determine the best course of action.
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Peter ForsterWebsite DevelopmentAuthor Commented:
Actually I only am connected to one router at a time. There are two routers on the network but that is because we allow the kids to use one router, which we control (turn off) when they are not supposed to be online.

The Route Print is attached.

Thank you for your reply!
route-print.jpg
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David SankovskySenior SysAdminCommented:
I see.
Is the 2nd Router is on a different WAN connection or does it work as an access point to your main router?

How many Network Interface Cards does your computer have?
If you could attach the output for the following command:
ipconfig /all

Open in new window

from the CMD I could try and make sense of it.
(I don't assume you have an actual netowrk diagram handy, do you?)
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Peter ForsterWebsite DevelopmentAuthor Commented:
Any way of capturing the output? It runs and closes itself before I can capture it. The fact that there is no diagram is emblematic of my initial query... We used to use the home network tool that Cisco bought and killed, and nothing seems to have replaced it.
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Adam PoundersCommented:
You can run the following command from the command line to copy the output to your clipboard:

ipconfig /all | clip 

Open in new window


You will then be able to paste it into your response here.
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Peter ForsterWebsite DevelopmentAuthor Commented:
Windows IP Configuration

   Host Name . . . . . . . . . . . . : SurfacePro3
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Local Area Connection* 3:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
   Physical Address. . . . . . . . . : 4E-0B-BE-2D-10-D1
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter WIFI:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Marvell AVASTAR Wireless-AC Network Controller
   Physical Address. . . . . . . . . : 4C-0B-BE-2D-11-D0
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::a5dc:74ad:2b5d:a6ad%10(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.1.15(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Monday, October 5, 2015 5:14:18 PM
   Lease Expires . . . . . . . . . . : Wednesday, October 7, 2015 4:59:18 AM
   Default Gateway . . . . . . . . . : 192.168.1.1
   DHCP Server . . . . . . . . . . . : 192.168.1.1
   DHCPv6 IAID . . . . . . . . . . . : 55315390
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1D-4C-0C-51-4C-0B-BE-2D-11-D0
   DNS Servers . . . . . . . . . . . : 192.168.1.1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   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. . . . . . . . . . . : 2001:0:9d38:6ab8:1826:2802:9d30:ec3e(Preferred)
   Link-local IPv6 Address . . . . . : fe80::1826:2802:9d30:ec3e%4(Preferred)
   Default Gateway . . . . . . . . . : ::
   DHCPv6 IAID . . . . . . . . . . . : 134217728
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1D-4C-0C-51-4C-0B-BE-2D-11-D0
   NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter isatap.{A3A05D0F-D9ED-4013-B38D-082FA8E69CA7}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
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David SankovskySenior SysAdminCommented:
Well it seems that only one NIC is connected. and it does fit the routing information supplied in the earlier comment.

According to the information I have here, your computer only has 1 NAT device, it's not aware of another one and certainly doesn't direct any queries toward it, It might be a misconfiguration between the two routers, which leads me back to the original question. is the 2nd router (The one the children use) configured  to use the Original as the Internet gateway? or are they on two completely different and segregated networks?
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Peter ForsterWebsite DevelopmentAuthor Commented:
Originally it used the Original as the gateway but currently they are configured as two different networks. Maybe that will solve the problem?
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David SankovskySenior SysAdminCommented:
Two different networks is fine, as long as you know hot to correctly configure them,
It's best to have the configuration as it was before.
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Peter ForsterWebsite DevelopmentAuthor Commented:
I have set up the two routers so that both are using different ranges of IP addresses. This twist is new and may explain the problem I was having with losing connections. I hope that is the case. Thank you to every one who replied.
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Peter ForsterWebsite DevelopmentAuthor Commented:
Thank you for your help
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