[GH-ISSUE #2201] macos Internal Netbird DNS resolver uses IPv6 #4359

New Issue

saavagebueno · 2026-08-05T00:57:15-04:00

saavagebueno commented

2026-08-05 00:57:15 -04:00

Originally created by @ez1976 on GitHub (Jun 26, 2024).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/2201

Hi.
when not connected to netbird, the MacOS is using the regular laptop DNS and all is well.
but once connected to netbird (and IPv6 is enabled on the MAC), any requests to external resources are automatically delayed by 30 seconds.
it seems that if i do nslookup i always get the correct IP but using netbird i can see also an additional line for rdata_46).
if i run:
sudo networksetup -setv6off Ethernet
sudo networksetup -setv6off Wi-Fi

it disables the IPv6 and works right away
so it seems that the internal netbird DNS resolver is trying to query via IPv6

Originally created by @ez1976 on GitHub (Jun 26, 2024). Original GitHub issue: https://github.com/netbirdio/netbird/issues/2201 Hi. when not connected to netbird, the MacOS is using the regular laptop DNS and all is well. but once connected to netbird (and IPv6 is enabled on the MAC), any requests to external resources are automatically delayed by 30 seconds. it seems that if i do nslookup i always get the correct IP but using netbird i can see also an additional line for rdata_46). if i run: sudo networksetup -setv6off Ethernet sudo networksetup -setv6off Wi-Fi it disables the IPv6 and works right away so it seems that the internal netbird DNS resolver is trying to query via IPv6

saavagebueno added the bug dns macos labels 2026-08-05 00:57:15 -04:00

saavagebueno closed this issue

2026-08-05 00:57:15 -04:00

saavagebueno commented

2026-08-05 00:57:15 -04:00

@mlsmaycon commented on GitHub (Jun 26, 2024):

Thanks for reporting the issue @ez1976 . I was not able to replicate the issue on 0.28.3. Can you share more information about your routing setup that might influence the DNS resolution? For instance, do you have exit node routes or DNS routes enabled?

Also, is this delay observed only in the agent startup? And having a match domain for the DNS queries you are performing helps with the issue?

@mlsmaycon commented on GitHub (Jun 26, 2024): Thanks for reporting the issue @ez1976 . I was not able to replicate the issue on 0.28.3. Can you share more information about your routing setup that might influence the DNS resolution? For instance, do you have exit node routes or DNS routes enabled? Also, is this delay observed only in the agent startup? And having a match domain for the DNS queries you are performing helps with the issue?

saavagebueno referenced this issue

2026-08-05 05:06:57 -04:00

[PR #4359] [CLOSED] feat: create job channel between management and client #20189

saavagebueno referenced this issue

2026-08-05 05:06:57 -04:00

[PR #4359] feat: create job channel between management and client #20195

saavagebueno referenced this issue

2026-08-05 06:06:49 -04:00

[PR #4359] [CLOSED] feat: create job channel between management and client #23117

saavagebueno referenced this issue

2026-08-05 06:06:49 -04:00

[PR #4359] feat: create job channel between management and client #23123

saavagebueno referenced this issue

2026-08-05 07:05:47 -04:00

[PR #4359] [CLOSED] feat: create job channel between management and client #25270

saavagebueno referenced this issue

2026-08-05 07:05:47 -04:00

[PR #4359] feat: create job channel between management and client #25274

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Reference: DYNR/netbird#4359