Good evening,

 

I have issues with my router and his connection to the internet. The service provider is o2 telefonica germany and i have a classic VDSL 50 mbit connection.

 

I can't reach ip adresses via IPV4(http(e.g. amazon twitch), ssh etc.), IPV6 is no problem(e.g. youtube.com or this beautiful website).

 

I updated to the most recent firmware for my router model, but its still not working.

I contaced the service provider today, they said everything is fine - i'm visible from the outside with an IPV4 and a IPV6 address - and i should contact the router manufacturer.

whatismyipaddress dot com tells me

 

IPv6: 

show my ipv6 address

IPv4: 

Not detected

 

I've used the ISP profile 'O2_VDSL(über Telekom)' and can establish a PPPoE connection despite the internet status under the Basic-Tab telling me the the detection fails following a 'Disconnected' Status. On the other hand, the DSL status under the Advanced-Tab shows a established connection(Line staus: Connected).

 

I guess the reason for the output in the Basic-Tab is the followin, if i refresh the failed connection there it produces more ncsi lookups which fail the same way

 

2020-10-28 19:38:17 [6] Httpd: DNS 2a01:c30::530 resolve succeed for dns.msftncsi.com
2020-10-28 19:38:17 [6] Httpd: DNS 2a01:c30::530 resolve timeout for www.msftncsi.com
2020-10-28 19:38:17 [6] Httpd: DNS 2a01:c30::531 resolve succeed for dns.msftncsi.com
2020-10-28 19:38:17 [6] Httpd: DNS 2a01:c30::531 resolve timeout for www.msftncsi.com
2020-10-28 19:38:20 [6] Httpd: DNS 62.109.121.2 resolve succeed for dns.msftncsi.com
2020-10-28 19:38:20 [6] Httpd: DNS 62.109.121.2 resolve succeed for www.msftncsi.com
2020-10-28 19:38:22 [4] Httpd: receive TCP packet failed for NCSI response

dns.msftncsi.com is reachable via IPV6, www.msftncsi.com not - checked that via nslookup

 

What i've tried:

 - newest firmware and the one before

 - changing the default isp dns addresses to googles

 - factory reset

 - disabled the IPV6 support in the wan interface via Advanced - Network - Internet, obviously afterwards i even weren't able to reach the ipv6 supporting websites aswell

 

Diagnostics output:

Test xDSL Synchronization    Pass
Test WAN Connection    Pass
Network Connection Status Inspect (NCSI)    Fail
Diagnostics completed

 

example tracert to heise.de

C:\Users\user>tracert -6 heise.de

Tracing route to heise.de [2a02:2e0:3fe:1001:302::]

over a maximum of 30 hops:

1    <1 ms     1 ms    <1 ms  dynamic-2a01-0c22-721e-2701-b2be-76ff-fe6e-9a64.c22.pool.telefonica.de [2a01:c22:721e:2701:b2be:76ff:fe6e:9a64]

2    12 ms    12 ms    13 ms  2a02:3001::133

C:\Users\user>tracert -4 heise.de Tracing route to heise.de [193.99.144.80]

over a maximum of 30 hops:

1    <1 ms    <1 ms    <1 ms  ARCHER_VR600V [192.168.1.1]

2     *        *        *     Request timed out.

complete system log attached