Tailscale Incompatibility

[alexk101]

System Info
Distro: EndeavourOS
CPU: 8-core AMD Ryzen 7 6800H with Radeon Graphics (-MT MCP-)
speed/min/max: 503/400/4785 MHz
Kernel: 6.10.5-arch1-1 x86_64

What worked?
Still able to ping 1.1.1.1 and access the internet through IP's directly

What did not work?
When using Tailscale with portmaster, I am unable to resolve any DNS queries.

Debug Information:

NJ{"Created":1723998797,"Modified":1723998797,"Expires":1726590797,"Deleted":0}S
executing core/portmaster-core version 1.6.10 on linux amd64
240818 12:33:17.254 ▶ BOF
240818 12:33:17.386 entication:291 ▶ WARN 001 api: denying api access from 127.0.0.1:45742
240818 12:33:18.387 entication:291 ▶ WARN 003 api: denying api access from 127.0.0.1:58746
240818 12:33:19.388 entication:291 ▶ WARN 005 api: denying api access from 127.0.0.1:58762
240818 12:33:20.390 entication:291 ▶ WARN 007 api: denying api access from 127.0.0.1:58768
240818 12:33:21.391 entication:291 ▶ WARN 009 api: denying api access from 127.0.0.1:58776
240818 12:33:22.392 entication:291 ▶ WARN 011 api: denying api access from 127.0.0.1:58790
240818 12:33:23.146 les/worker:109 ▶ ERRO 013 resolver: service-worker ip info delayed cache writer failed (1): could not start database cache (type bbolt): timeout - restarting in 2s
240818 12:33:48.321 pat/module:112 ▶ ERRO 015 compat: self-check #3: dns integration check failed: failed to receive test response: lookup a81429592840200e3b8934c09b3931629b.self-check.portmaster.home.arpa. on 100.100.100.100:53: read udp 100.96.67.87:50287->100.100.100.100:53: i/o timeout
240818 12:33:57.736 e/core/api:118 ▶ WARN 017 core: user requested shutdown via action
240818 12:33:57.837 dules/stop:057 ▶ WARN 019 modules: starting shutdown...
240818 12:34:00.326 ◀ EOF

[github-actions]

Hey @alexk101, thank you for reporting on a compatibility.

We keep a list of compatible software and user provided guides for improving compatibility in the wiki - please have a look there.
If you can't find your software in the list, then a good starting point is our guide on How do I make software compatible with Portmaster.

If you have managed to establish compatibility with an application, please share your findings here. This will greatly help other users encountering the same issues.

[github-actions]

Greetings and welcome to our community! As this is the first issue you opened here, we wanted to share some useful infos with you:

• 🗣️ Our community on Discord is super helpful and active. We also have an AI-enabled support bot that knows Portmaster well and can give you immediate help.
• 📖 The Wiki answers all common questions and has many important details. If you can't find an answer there, let us know, so we can add anything that's missing.

[alexk101]

I have discovered a work around. Tailscale manually overwrite /etc/resolv.conf to do dns resolution when it is unable to correctly interface with systemd-resolved. This is the default behavior on most distros bundled with NetworkManager & systemd-resolved. To allow Tailscale to properly communicate, follow the instructions here