[PR #2291] Apply host DNS settings on peer state change #14933

New Issue

saavagebueno · 2026-08-05T03:06:37-04:00

saavagebueno commented

2026-08-05 03:06:37 -04:00

Original Pull Request: https://github.com/netbirdio/netbird/pull/2291

State: closed
Merged: No

Describe your changes

This is a PoC and a potential fix #2002. This patch is not full fleshed out and their are some unattended side effects, but I wanted to get your thoughts and opinions @mlsmaycon and @pascal-fischer and @lixmal.

More Info:

This essential tries to ensure that host dns changes aren't applied til at least one routing peer is connected and DNS servers are reachable. It does so by tying deactivation and reactivation of upstream servers to Peerlist state changes in the status recorder.

As it stands, now status -d doesn't accurately reflect the status on first connection. That is because I haven't figure out an effective method to deactivate the servers without more intense changes. Primarily because of how the deactivate and reactivate callbacks are structure and their dependence of the removeIndex. One potential workaround is to modify deactivate to skip applying host config, so that we can fix this side effect.

Thoughts and discussion please

Issue ticket number and link

Checklist

Is it a bug fix
Is a typo/documentation fix
Is a feature enhancement
It is a refactor
Created tests that fail without the change (if possible)
Extended the README / documentation, if necessary

**Original Pull Request:** https://github.com/netbirdio/netbird/pull/2291 **State:** closed **Merged:** No --- ## Describe your changes This is a PoC and a potential fix #2002. This patch is not full fleshed out and their are some unattended side effects, but I wanted to get your thoughts and opinions @mlsmaycon and @pascal-fischer and @lixmal. More Info: This essential tries to ensure that host dns changes aren't applied til at least one routing peer is connected and DNS servers are reachable. It does so by tying deactivation and reactivation of upstream servers to Peerlist state changes in the status recorder. As it stands, now `status -d` doesn't accurately reflect the status on first connection. That is because I haven't figure out an effective method to deactivate the servers without more intense changes. Primarily because of how the deactivate and reactivate callbacks are structure and their dependence of the removeIndex. One potential workaround is to modify deactivate to skip applying host config, so that we can fix this side effect. Thoughts and discussion please ## Issue ticket number and link ### Checklist - [ ] Is it a bug fix - [ ] Is a typo/documentation fix - [x] Is a feature enhancement - [x] It is a refactor - [ ] Created tests that fail without the change (if possible) - [ ] Extended the README / documentation, if necessary

saavagebueno added the pull-request label 2026-08-05 03:06:37 -04:00

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Reference: DYNR/netbird#14933