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Connecting to the internet via a O2 HomeBox 6742 (connected to DSL), my Ubuntu laptop can hardly reach anything except for Google and its services, including YouTube, Spotify, and Breitbandmessung.

Connections mostly time out before receiving any data, both in all web browsers and when using ping or traceroute. Sometimes I can reach websites like GitHub, StackOverflow, or o2online.de (my ISP's customer portal) when retrying and reloading frequently, but most of the time I can't reach them at all.

Connecting via ethernet cable, it's only a little bit better. The same laptop has no connection problems using any other router, including a hotspot from my android mobile and numerous coworking cafés.

The same router did not show any severe connection problems with any other client so far, including an Android 13 phone and a Lenovo ThinkPad both with Linux Mint and Windows 10, although you can see timeouts in the ThinkPad traceroute protocols.

According to my O2's customer support, the router is working without any problems and providing the services as contracted. Measuring network speed using the official broadband analysis app Breitbandmessung by German Bundesnetzagentur, sometimes the analysis does not start at all due to "no stable internet", but most of the time it reports a working connection faster than my plan requires.

  • Router: O2 HomeBox 6742, RTV7905VW-D112
  • Router Firmware Version: 4.0.0.90v
  • Plan: O2 my Home M (DSL, download up to 50 Mbit/s, upload up to 10 Mbit/s).

As the connection issues only occur with the problematic client / router combination, irrespective of the connection type (wifi or ethernet), this looks like a software / connection problem, so tried various configuration settings, like disabling IPv6 on the client side, and changing the wifi access point settings in the router config, but to no avail.

My Ubuntu network setup does not use an explicit network manager setup, as far as I can see.

  • Client: Tuxedo Infinitybook S15 gen 6
  • Ethernet interface: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
  • CPU: Intel i5-1135G7 (x64)
  • Wireless interface: Intel Wi-Fi 6 AX200
  • OS: Ubuntu 20.04.5 LTS

I cross-posted this topic to an Ubuntu Linux support community (including more technical details about my client setup here: https://askubuntu.com/questions/1434544/o2-homebox-6742-network-connection-timeouts).

 

Infinitybook Ubuntu + O2 HomeBox 6742 via wifi

$ traceroute google.com
traceroute to google.com (142.250.186.110), 30 hops max, 60 byte packets
 1  * * *
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * 74.125.244.100 (74.125.244.100)  51.553 ms
12  216.239.62.243 (216.239.62.243)  19.947 ms 172.253.71.134 (172.253.71.134)  19.935 ms *
13  108.170.228.254 (108.170.228.254)  26.808 ms  23.426 ms  22.833 ms
14  209.85.252.76 (209.85.252.76)  22.822 ms 108.170.228.254 (108.170.228.254)  29.663 ms  29.651 ms
15  108.170.252.1 (108.170.252.1)  23.958 ms 142.250.214.191 (142.250.214.191)  19.846 ms 108.170.252.1 (108.170.252.1)  24.502 ms
16  fra24s06-in-f14.1e100.net (142.250.186.110)  23.928 ms 142.250.214.191 (142.250.214.191)  26.335 ms fra24s06-in-f14.1e100.net (142.250.186.110)  23.327 ms

Infinitybook Ubuntu Linux + O2 HomeBox 6742 via ethernet

$ traceroute google.com
traceroute to google.com (142.250.186.174), 30 hops max, 60 byte packets
 1  * * *
 2  loopback1.0003.acln.01.ber.de.net.telefonica.de (62.52.201.186)  5.823 ms  5.807 ms  5.795 ms
 3  bundle-ether17.0004.dbrx.01.ber.de.net.telefonica.de (62.53.2.114)  5.784 ms  5.772 ms bundle-ether17.0003.dbrx.01.ber.de.net.telefonica.de (62.53.2.110)  6.020 ms
 4  bundle-ether10.0003.corx.01.ber.de.net.telefonica.de (62.53.6.178)  17.041 ms ae10-0.0002.corx.02.ber.de.net.telefonica.de (62.53.25.243)  16.260 ms bundle-ether11.0003.corx.01.ber.de.net.telefonica.de (62.53.6.230)  20.189 ms
 5  ae4-0.0002.corx.02.fra.de.net.telefonica.de (62.53.0.73)  16.454 ms ae1-0.0001.corx.04.muc.de.net.telefonica.de (62.53.5.86)  20.403 ms ae4-0.0002.corx.02.fra.de.net.telefonica.de (62.53.0.73)  16.214 ms
 6  bundle-ether2.0002.dbrx.04.muc.de.net.telefonica.de (62.53.3.231)  16.202 ms  14.521 ms bundle-ether1.0003.dbrx.02.fra.de.net.telefonica.de (62.53.14.163)  15.439 ms
 7  bundle-ether1.0001.prrx.04.muc.de.net.telefonica.de (62.53.7.157)  21.679 ms bundle-ether2.0001.prrx.04.muc.de.net.telefonica.de (62.53.8.231)  18.400 ms bundle-ether1.0004.prrx.02.fra.de.net.telefonica.de (62.53.8.187)  15.808 ms
 8  72.14.198.209 (72.14.198.209)  21.625 ms  21.043 ms  21.542 ms
 9  * * *
10  142.250.234.18 (142.250.234.18)  19.872 ms 108.170.247.113 (108.170.247.113)  15.172 ms 216.239.63.96 (216.239.63.96)  14.681 ms
11  142.250.214.203 (142.250.214.203)  21.636 ms 108.170.247.103 (108.170.247.103)  14.788 ms 142.250.214.201 (142.250.214.201)  22.073 ms
12  fra24s08-in-f14.1e100.net (142.250.186.174)  21.886 ms * 172.253.70.79 (172.253.70.79)  21.659 ms

Does anybody know a solution? 

 Moin Moin,

buy a FRITZ!Box 7530 (AX U are able to use WiFi6) or any other FRITZ!Box 75xx.

The FRITZ!Box is mor compatible and has more diagnostic functions.

For WiFi on homeBox rename the 5GHz network.

Change the encryption type for WiFi. 

Als Berliner DSL-Kunde mit O2 my Home M-Vertrag und einer O2 HomeBox 6742 kann ich mit meinem Tuxedo-Laptop kaum das Internet benutzen. Abgesehen von Google, YouTube, Spotify und der Breitbandmessung der Bundesnetzagentur laufen fast alle Requests in Timeouts. Mit WLAN ist dieser Router mit diesem Laptop daher praktisch nicht benutzar, mit Ethernet-Kabelverbindung ist es nur wenig besser.
 

Das selbe Laptop surft ansonsten problemlos im Internet, sowohl über einen mobilen Hotspot meines Android Handys, als auch in sämtlichen öffentlichen WLAN-Netzen (z.B. in Coworking-Cafés).

Der selbe Router versorgt wiederum andere Clients einigermaßen zuverlässig mit Daten, darunter Android-Handys und ein Lenovo ThinkPad sowohl mit Linux Mint als auch mit Windows 10, obwohl auch diese Endgeräte keine Top-Verbindung haben und auch dort im Traceroute mehrere Timeouts zu sehen sind.

Laut O2-Kundensupport funktioniert der HomeBox 6742 Router fehlerfrei und liefert die vertraglich vereinbarte Leistung. Die Breitbandmessung-App der Bundesnetzagentur bricht gelegentlich die Messung ab wegen fehlender stabiler Internetverbindung, misst ansonsten aber immer Werte oberhalb der vertraglich vereinbarten.

  • Router: O2 HomeBox 6742, RTV7905VW-D112
  • Router Firmware Version: 4.0.0.90v
  • Vertrag: O2 my Home M (DSL, download bis zu 50 Mbit/s, upload bis zu 10 Mbit/s).

Da die Verbindungsprobleme in dieser Form nur in der Kombination beider Geräte (Laptop + Router) aufzutreten scheinen, habe ich verschiedene Konfigurationsänderungen ausprobiert (u.a. IPv6 am Client abschalten, oder die WLAN-Einstellungen des Routers auf kompatiblere Werte einzuschränken), all das macht aber keinen Unterschied.

Technische Daten meines Laptops und der verwendeten Software:

  • Tuxedo Infinitybook S15 gen 6
  • Netzwerkkarte: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
  • CPU: Intel i5-1135G7 (x64)
  • WLAN-Interface: Intel Wi-Fi 6 AX200
  • Betriebssystem: Ubuntu 20.04.5 LTS

Anbei die Traceroute-Protokolle der verschiedenen, oben beschriebenen, gestörten und funktionierender Setups.

Ich habe das Problem auch in der Ubuntu-Linux-Community beschrieben, dort mit weiteren technischen Details: https://askubuntu.com/questions/1434544/o2-homebox-6742-network-connection-timeouts).

Infinitybook Ubuntu + O2 HomeBox 6742 über WLAN

$ traceroute google.com
traceroute to google.com (142.250.186.110), 30 hops max, 60 byte packets
 1  * * *
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * 74.125.244.100 (74.125.244.100)  51.553 ms
12  216.239.62.243 (216.239.62.243)  19.947 ms 172.253.71.134 (172.253.71.134)  19.935 ms *
13  108.170.228.254 (108.170.228.254)  26.808 ms  23.426 ms  22.833 ms
14  209.85.252.76 (209.85.252.76)  22.822 ms 108.170.228.254 (108.170.228.254)  29.663 ms  29.651 ms
15  108.170.252.1 (108.170.252.1)  23.958 ms 142.250.214.191 (142.250.214.191)  19.846 ms 108.170.252.1 (108.170.252.1)  24.502 ms
16  fra24s06-in-f14.1e100.net (142.250.186.110)  23.928 ms 142.250.214.191 (142.250.214.191)  26.335 ms fra24s06-in-f14.1e100.net (142.250.186.110)  23.327 ms

Infinitybook Ubuntu Linux + O2 HomeBox 6742 über Ethernet/Netzwerkkabel

$ traceroute google.com
traceroute to google.com (142.250.186.174), 30 hops max, 60 byte packets
 1  * * *
 2  loopback1.0003.acln.01.ber.de.net.telefonica.de (62.52.201.186)  5.823 ms  5.807 ms  5.795 ms
 3  bundle-ether17.0004.dbrx.01.ber.de.net.telefonica.de (62.53.2.114)  5.784 ms  5.772 ms bundle-ether17.0003.dbrx.01.ber.de.net.telefonica.de (62.53.2.110)  6.020 ms
 4  bundle-ether10.0003.corx.01.ber.de.net.telefonica.de (62.53.6.178)  17.041 ms ae10-0.0002.corx.02.ber.de.net.telefonica.de (62.53.25.243)  16.260 ms bundle-ether11.0003.corx.01.ber.de.net.telefonica.de (62.53.6.230)  20.189 ms
 5  ae4-0.0002.corx.02.fra.de.net.telefonica.de (62.53.0.73)  16.454 ms ae1-0.0001.corx.04.muc.de.net.telefonica.de (62.53.5.86)  20.403 ms ae4-0.0002.corx.02.fra.de.net.telefonica.de (62.53.0.73)  16.214 ms
 6  bundle-ether2.0002.dbrx.04.muc.de.net.telefonica.de (62.53.3.231)  16.202 ms  14.521 ms bundle-ether1.0003.dbrx.02.fra.de.net.telefonica.de (62.53.14.163)  15.439 ms
 7  bundle-ether1.0001.prrx.04.muc.de.net.telefonica.de (62.53.7.157)  21.679 ms bundle-ether2.0001.prrx.04.muc.de.net.telefonica.de (62.53.8.231)  18.400 ms bundle-ether1.0004.prrx.02.fra.de.net.telefonica.de (62.53.8.187)  15.808 ms
 8  72.14.198.209 (72.14.198.209)  21.625 ms  21.043 ms  21.542 ms
 9  * * *
10  142.250.234.18 (142.250.234.18)  19.872 ms 108.170.247.113 (108.170.247.113)  15.172 ms 216.239.63.96 (216.239.63.96)  14.681 ms
11  142.250.214.203 (142.250.214.203)  21.636 ms 108.170.247.103 (108.170.247.103)  14.788 ms 142.250.214.201 (142.250.214.201)  22.073 ms
12  fra24s08-in-f14.1e100.net (142.250.186.174)  21.886 ms * 172.253.70.79 (172.253.70.79)  21.659 ms

Über hilfreiche Hinweise würde ich mich sehr freuen! 

Edit o2_Bianca: Beide Beiträge zu einem Beitrag zusammengelegt. Da es sich um das gleiche Thema handelt

Moin Moin,

buy a FRITZ!Box 7530

Can I use a FritzBox of my own (without paying monthly rent for a FritzBox provided by O2), will this detect the correct DSL configuration?

What is the actual problem with HomeBox routers? This looks like an obscure bug that only occurs in combination of a specific router, and a specific network adapter or Ubuntu setup???

 

Moin,

leider doppelt…

@slow_2_oh_no bitte mal hier lesen

Edit o2_Bianca: Beide Beiträge zu einem Beitrag zusammengelegt. Da es sich um das gleiche Thema handelt

 

Yes you can use your own FRITZ!Box. If you buy your own FRITZ!Box you don‘t have to pay for renting a fritzbox. And if you send back the homebox to O2 via https://www.o2online.de/service/retoure/ than you have not to pay for the homebox too.

The homebox has sometimes problems with some hardware combinations. You found one, maybe.

The advantage of the FRITZ!Box is that you could see the quality of your connection. 

@slow_2_oh_no Please buy only a Fritzbox series 75XX

I had a similar problem with Vodafone (their VodafoneStation had conflicts with ThinkPad Laptops and Huawei phones). Seems that German ISPs tend to default to cheap (and buggy) Chinese routers and charge an extra monthly fee if users want a FritzBox router instead. Good to know it is possible, at least as a DSL customer, to use a FritzBox without the monthly fee though.

For Testing the cheapest way is a used FRITZ!Box 7520 from eBay. 

Should be available under 100€ most about 65-75€.

Here a litte guide (in German) to use the 7520 with O2.

 

Thanks for the quick replies! I marked the recommendation to use a FritzBox as a solution, but I am still curious and angry about the cheap default routers of German ISP and that they claim everything is working fine. If it is not secret that the cheap Chinese devices are in fact buggy, they should not be used by anyone at all!

Hello @slow_2_oh_no,

It's great that our users have been able to help you so much and have given you valuable tips.

If you need further help returning the homebox please let us know.

Best regards

Giulia

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