DNS Filter script was broken after release upgrade, stopping all IPV4 and IPV6 connections

Describe your issue

What's the expected behaviour?

Be able to use wifi normally.

What's the current behaviour?

IPv4 and IPv6 requests are blocked.

How to reproduce your issue?

Not sure. I had a working postmarket OS install on a version (v22 or older, not sure the exact version). Wifi was working well. I upgraded to 23.06 using the instructions from the wiki, and after a successful install and reboot DNS wasn't working. I will add more details including a fix at the end.

What device are you using?

OnePlus 6

On what postmarketOS version did you encounter the issue?

• edge (master branch)

• v23.12

• v23.06 (supported until 2024-01-18)

• I confirm that the issue still is present after running sudo apk upgrade -a

On what environment did you encounter the issue?

Environments

• GNOME Shell on Mobile
• Phosh
• Plasma Mobile
• Sxmo (Wayland/Sway) Please post the output of sxmo_version.sh
• Other: Please fill out

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device

What's the build date of the image? (in yyyy-mm-dd format)

Additional information

I am able to connect to wifi connections normally, but cannot open any website or ping/nslookup anything. nslookup google.com would be empty nslookup google.com 8.8.8.8 would return results (ipv6 only, ipv4 empty). leading us to investigate the dns issue

The fix that worked for me was

sudo chmod -x /etc/NetworkManager/dispatcher.d/99-dns-filter.sh; 
sudo service networkmanager restart

So your problem is with the filtering script that's supposed to block IPv4 / IPv6 responses when connected to wifi if the wifi doesn't support it. But this detection is evidently broken for you and causing both v4 and v6 to be disabled The intent is that if the wifi only supports v4 and mobile data supports both, then we want to artificially fail v6 lookups, otherwise the application may end up using v6 over mobile data and cost the user money The "fix" I asked you to do is to mark it non-executable so that NM does not run it because it's evidently breaking for you

Big thanks for Arnavion on matrix for the incredible help

changed title from DNS Filter script was broken, stopping all IPV4 and IPV6 connections to DNS Filter script was broken after release upgrade, stopping all IPV4 and IPV6 connections

By JP on 2024-04-09T20:27:26

Same issue and solution on asus-me176c Thanks to Arnavion

By Guill 13 on 2024-04-09T20:31:18

I updated to 23.12 and DNS is still working after the fix to 23.06 (probably due to this commit e09952c8)

By JP on 2024-04-09T21:48:45

23.06 is no longer supported, please use 23.12. This should be fixed in e09952c8 (thanks @moralpanic for confirming)

By clayton craft on 2024-04-24T22:39:27

closed