VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts

VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
2021-06-20 19:39:06
Hardware Version: V1
Firmware Version: 1.4.0 0.9.1 v009e.0 Build 201122 Rel.72659n

Hi all,

 

Been having this problem for several months, the internet constantly drops after DNS timeouts for either www.msftncsi.com or dns.msftncsi.com

as shown in the log below:

 

2021-06-20 20:12:36 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 20:12:38 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 20:12:41 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 20:12:43 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 20:13:50 [6] DHCPD: Recv DISCOVER from A8:40:7D:95:F7:1F
2021-06-20 20:13:50 [5] DHCPD: Send OFFER with ip 192.168.1.3
2021-06-20 20:13:50 [6] DHCPD: Recv DISCOVER from A8:40:7D:95:F7:1F
2021-06-20 20:13:50 [5] DHCPD: Send OFFER with ip 192.168.1.3
2021-06-20 20:13:51 [5] DHCPD: Send ACK to 192.168.1.3
2021-06-20 20:18:31 [5] DHCPD: Send ACK to 192.168.1.13
2021-06-20 20:23:14 [6] Httpd: DNS 1.0.0.1 resolve timeout for dns.msftncsi.com
2021-06-20 20:23:16 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 20:23:21 [5] DHCPD: Send ACK to 192.168.1.5

 

ISP is EE, on an ADSL+ Line.

The DSL DNS is set to 1.1.1.1 or 1.0.0.1 and the local DNS either uses a local PiHole server or the 1.1.1.1 and 1.0.0.1 DNS servers, depending on if the connection has crashed. So not sure where the 8.8.8.8 DNS requests are coming from.

 

It's a nightmare and I can't keep having these internet drop outs, so I'm going to have to replace the router with another model from a different brand.

 

Here's a section of log from DSL Connection:

 

2021-06-20 19:46:55 [5] PPP: Release PPP unit success
2021-06-20 19:47:01 [6] PPP: PPPoATM pppoa_init
2021-06-20 19:47:01 [6] PPP: PPPoATM setdevname_pppoatm - SUCCESS:0.38
2021-06-20 19:47:01 [6] PPP: Using interface ppp0
2021-06-20 19:47:01 [5] PPP: Connect: ppp0 <--> 0.38
2021-06-20 19:47:01 [6] PPP: CHAP authentication succeeded: CHAP authentication success
2021-06-20 19:47:01 [5] PPP: CHAP authentication succeeded
2021-06-20 19:47:01 [5] PPP: local  IP address 2.30.17.21
2021-06-20 19:47:01 [5] PPP: remote IP address 172.16.14.138
2021-06-20 19:47:01 [5] PPP: primary   DNS address 87.237.17.200
2021-06-20 19:47:01 [5] PPP: secondary DNS address 87.237.17.168
2021-06-20 19:47:18 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 19:47:20 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 19:47:38 [6] Httpd: DNS 1.1.1.1 resolve succeed for dns.msftncsi.com
2021-06-20 19:47:38 [6] Httpd: DNS 1.1.1.1 resolve succeed for www.msftncsi.com
2021-06-20 19:47:39 [6] Httpd: NCSI response check succeed.
2021-06-20 19:47:43 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 19:47:43 [6] Httpd: DNS 8.8.8.8 resolve succeed for dns .msftncsi.com
2021-06-20 19:48:03 [6] Httpd: DNS 1.1.1.1 resolve succeed for dns.msftncsi.com
2021-06-20 19:48:04 [6] Httpd: DNS 1.1.1.1 resolve succeed for www.msftncsi.com
2021-06-20 19:48:04 [6] Httpd: NCSI response check succeed.
2021-06-20 19:48:08 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 19:48:10 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 19:49:26 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 19:49:26 [6] Httpd: DNS 8.8.8.8 resolve succeed for dns.msftncsi.com
2021-06-20 19:49:29 [6] Httpd: DNS 1.1.1.1 resolve succeed for dns.msftncsi.com
2021-06-20 19:49:29 [6] Httpd: DNS 1.1.1.1 resolve succeed for www.msftncsi.com
2021-06-20 19:49:30 [6] Httpd: NCSI response check succeed.
2021-06-20 19:49:33 [6] Httpd: DNS 1.1.1.1 resolve succeed for dns.msftncsi.com
2021-06-20 19:49:34 [6] Httpd: DNS 1.1.1.1 resolve succeed for www.msftncsi.com
2021-06-20 19:49:35 [6] Httpd: NCSI response check succeed.
2021-06-20 19:49:36 [6] Httpd: DNS 1.1.1.1 resolve succeed for dns.msftncsi.com
2021-06-20 19:49:36 [6] Httpd: DNS 1.1.1.1 resolve succeed for www.msftncsi.com
2021-06-20 19:49:36 [6] Httpd: NCSI response check succeed.
2021-06-20 19:50:10 [5] DHCPD: Send ACK to 192.168.1.8
2021-06-20 19:50:10 [5] DHCPD: Send ACK to 192.168.1.8
2021-06-20 19:52:10 [6] DHCPD: Recv DISCOVER from A6:5F:F0:75:93:BC
2021-06-20 19:52:10 [5] DHCPD: Send OFFER with ip 192.168.1.13
2021-06-20 19:52:12 [5] DHCPD: Send ACK to 192.168.1.13
2021-06-20 19:54:37 [5] DHCPD: Send ACK to 192.168.1.13
2021-06-20 20:12:36 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 20:12:38 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 20:12:41 [6] Httpd: DNS 1.1.1.1 resolve timeout for dns.msftncsi.com
2021-06-20 20:12:43 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 20:13:50 [6] DHCPD: Recv DISCOVER from A8:40:7D:95:F7:1F
2021-06-20 20:13:50 [5] DHCPD: Send OFFER with ip 192.168.1.3
2021-06-20 20:13:50 [6] DHCPD: Recv DISCOVER from A8:40:7D:95:F7:1F
2021-06-20 20:13:50 [5] DHCPD: Send OFFER with ip 192.168.1.3
2021-06-20 20:13:51 [5] DHCPD: Send ACK to 192.168.1.3
2021-06-20 20:18:31 [5] DHCPD: Send ACK to 192.168.1.13
2021-06-20 20:23:14 [6] Httpd: DNS 1.0.0.1 resolve timeout for dns.msftncsi.com
2021-06-20 20:23:16 [6] Httpd: DNS 8.8.8.8 resolve timeout for dns.msftncsi.com
2021-06-20 20:23:21 [5] DHCPD: Send ACK to 192.168.1.5
 

It's driving me up the wall, and I need to get this disabled to get my internet working properly.

 

Please help!

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#1
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5 Reply
Re:VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
2021-06-22 05:53:25

@X3non  Hello, 

Thank you for your detailed post. 

 

It is recommended to use 8.8.8.8 as WAN DNS / DSL DNS and see if that helps.  (Advanced--Status--Internet - modify DNS settings)

If the issue happens again, can you help confirm some details to help locate the problem

 

>Does all the devices lost Internet when issue happens and what are they?  How do you recover the connection, like reboot the modem? 

> How often does this happen, is there any large traffic activities like file downloading or 

> Can you share with us a screenshot of the Status page  including the synchronization rate when issue occurs,  please save the whole system log and send to us, thank you

> When did you buy this modem and when did the issue starts. 

 

 

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#2
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Re:VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
2021-06-22 18:13:16

@TP-Link 

 

Hi, Thanks for the quick response.

 

I've attached the log and screenshot of when it crashes on 1.1.1.1 and 1.0.0.1 below in a .zip file.

 

In answer to your questions,

 

All devices lose internet when it happens, with mobile the devices simply spin endlessly/fail to load, or the devices report that the network has no internet access and revert to mobile data connections.

As for laptops/desktops, the error "Page failed to load" is given, often with the error "DNS Fail" but always corresponding with the router log showing a contact to either www.msftncsi.com or dns.msftncsi.com

A lot of the time the dns resolutions for the above addresses will show as succeeded in the logg as you'll see, but something about it trying to contact on 8.8.8.8 sometimes just crashes everything.

The connection can only be restored with one or 2 reboots of the router, and then sometimes it requires that the DSL connection be disconnected, the WAN DNS edited to 0.0.0.0 and then changed back before reconnecting the DSL in the console.

Often it happens at random times, consistently at around 1:50 am however. As far as I'm aware there are no large downloads present, the traffic monitor in the router doesn't report anything out of the ordinary, and no other issues seem to arise. It can often be noticed as my Sonos speakers stop playing music, crash and announce that they cannot reach Spotify, my music provider. After the router reboot the speakers will then be perfectly fine, until the next msftncsi request when they'll crash again.

 

I bought this modem to replace a TP-Link AC2100/VR600 which I had up until February of this year. That device had compatability issues with other network equipment I use to supply wired ethernet around my home, and had no wireless issues, only LAN connection issues.

 

Hope this helps you diagnose my problem!

File:
TPLink Log and Status Screenshot.zipDownload
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#3
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Re:VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
2021-06-24 13:00:05

@X3nonHello, 

 Thanks so much for sharing all the detailed info, this issue you are experiencing sounds unusual. To address the issue and try to fix it, we would like to have a specialist look into this further via email. Please check your mailbox later, and let us know if the issue is resolved. Thank you!

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#4
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Re:VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
2021-08-18 10:32:17

@TP-Link hi did you resolve this issue as I have the same problem?

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#5
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Re:VR2100 - Connection dropping several times a day - msft.ncsi.com resolve timouts
a week ago

@MCrouch 

 

Not as of yet, I have a TP link engineer looking into it, But I think these products are just sh*t and not compatible with the broadband. 

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#6
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