on On September 3, 2026, MikroTik released an update that addresses a critical security vulnerability. The advisory for this vulnerability strongly recommends applying the update as soon as possible.
We will gradually roll out the update overnight across all our network devices. We apologize for any potential downtime—unfortunately, at least two hardware reboots are required to install this update.
P.S. Go to bed (Not everyone needs to adopt an unhealthy sleep schedule) 😇
on Today we exchange our old Alcatel switches with new Mikrotik hardware. Residents of Egilolfstraße 53, 55, 57 and 59 should expect outages beginning from 6 p.m.. It should not take more than 2 hours until everything is back online.
on We have received information from our internet provider BelWü that on July 2, 2026, from 8 AM to 6 PM, maintenance work is planned as part of the network expansion at the Hohenheim East and West locations. Although we were not explicitly mentioned, it is possible that there may be an impact on internet availability in the dormitories.
Check the status for that work here: https://www.belwue.de/trouble-tickets/ticket/739.xml
on After yesterday’s outage, we are fixing some smaller problems.
We cannot clearly name the cause of the error yesterday. What is certain is that our batteries should buffer power outages for 30–45 minutes. Instead, they switched on and off many times per second for a very long time until they were exhausted after several hours.
Now the devices need to be replaced.
Without power, our hardware shut down at around 9 p.m., and our network went offline.
Until about 1 a.m. today, work was done on site to fix the problem, and in the end power was brought from another room into the server room.
Work started again at 9 a.m. today. We are setting everything up again and are looking for the cause of the loss of the connection to Reutlingen.
We may update this article if necessary.
Update 3 p.m.: Welcome back Reutlingen and Hechingerstraße!
on At 9:30 PM, our entire network went down.
We are currently investigating the cause. As soon as we have more information, we will update this blog post.
Update:
As of approximately 00:15, everything should be back online. There may still be some issues, so please let us know via the contact form if you experience any problems.
on In Schwerzstraße 2, one switch has been showing unusual values in our monitoring for some time. To avoid it failing over the holidays, when we might not be able to arrange a replacement or repairs at short notice, we will carry out a preventive upgrade to our current network equipment.
We plan to leave Tübingen on Sunday at around 12:00. Accordingly, we will arrive in Hohenheim during the afternoon and start the work there.
Please expect at least two hours of work. During this time, the network will be unavailable several times for short periods. We will update this blog post as soon as the work is completed.
If anything is still open after the upgrade, we will probably be able to follow up on Monday or Tuesday. But please contact us immediately if anything does not work after the upgrade.
on Hello everyone,
During the course of the evening, we will be replacing switches at Fruwirthstr. 3, 7, and 9, which will cause the internet to be down for approximately one hour at each location.
We will let you know as soon as we are done – everything should be working again by tomorrow morning at the latest!
Update 9:42 p.m.: Fruwirthstr. 3 has already been completed—if you encounter any problems, please report them as soon as possible!
Update 00:28: Fruwirthstr. 7&9 have also been swapped—and we’re back in Tübingen.
So you should all have internet again – and new switches that will last a long time. 🙂
on Due to issues with the connections and an unsuccessful remote diagnosis, we will be visiting you today. We’ll take this opportunity to replace the switch with a new one and update our posters.
We are still looking for members from Hohenheim, as we currently only have one member there. If you’d like to join, please get in touch via the contact form.
The downtime due to the switch replacement should last about 45 minutes, and it will only affect Fruwirthstraße 5.
If you have any other issues or questions that can only be resolved on-site, now is the best time to let us know via the contact form while we’re already there.
Update: The maintenance is done, a new switch is installed and you should all be back online.
on Tomorrow between 8 AM and 4 PM, there may be brief interruptions to your internet connection.
But don’t worry — if everything goes smoothly, the outages will only last a few seconds. In the worst case, you might need to restart your router once.
Why are we doing this? We’re upgrading your internet connection and increasing the capacity of our uplink for the dormitories.
on After we received the first report about connection problems yesterday at 1:35 PM, we started looking into what could be causing it.
One single report usually doesn’t mean a hardware failure on our side, because that would normally affect entire buildings.
During the night, two more people contacted us, so we were able to do more testing this morning.
From one of them, we couldn’t get any useful info because their hardware is very old, and the third person didn’t reply anymore.
At around 3:00 PM today, something seems to have happened that made the issue worse. Luckily, more people have reached out since then, so we now believe there really is a problem in Hohenheim.
While I’m writing this, we’re running different tests, and we’re getting ready to drive from Tübingen to replace the device if needed.
If your Wi-Fi issues are caused by your own old hardware, you’re welcome to live with it.
Everyone else shouldn’t have any problems – please always contact us right away if you do, so we can fix it.
Around 5:30 PM, replaced an old fiber module in Egilolfstraße just to be sure.
Did some more tests, but no results.
Probably witnessed an outage, but not sure.
Installed hardware for diagnostics.
Will run tests overnight and check again tomorrow.
Update Saturday 6 pm:
The diagnosis took the whole day.
We can confirm the outages on all 13 connections that were reported.
All our devices say they are working fine. The older part we replaced yesterday was probably not the cause, because the problem is still there.
That’s frustrating.
We are getting ready to go on site in Hohenheim tomorrow morning. We will either try to find the problem by checking everything again or replace all the equipment in building 49/51 and the connection to building 53.
Update Sunday 8:30 am: Planned arrival in Hohenheim at 10:30 am.
Update from the car on the way to Tübingen (Sunday 5:00 PM):
We replaced all possible hardware.
Egilolfstraße 49 and 51 now have gigabit internet.
Feel free to try our speed test: https://netz-ak.de/intern-speedtest/
We hope this fixed the problem – even though we couldn’t find the exact cause.