[GH-ISSUE #4744] NETBIRD-ACL-INPUT is empty #10097

New Issue

saavagebueno · 2026-08-05T01:24:37-04:00

saavagebueno commented

2026-08-05 01:24:37 -04:00

Originally created by @xcstatus on GitHub (Nov 4, 2025).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/4744

Describe the problem

In the Buildroot , NETBIRD-ACL-INPUT is empty.

2025-11-04T15:14:01Z INFO [peer: iXOo+g9DEA/CRHkyf6JGubQrElAGdJnOZKbOZacUmUE=] peer/conn.go:262: peer connection closed
2025-11-04T15:14:01Z INFO [peer: iXOo+g9DEA/CRHkyf6JGubQrElAGdJnOZKbOZacUmUE=] manager/manager.go:286: start activity monitor
2025-11-04T15:14:01Z INFO [peer: iXOo+g9DEA/CRHkyf6JGubQrElAGdJnOZKbOZacUmUE=] activity/listener_udp.go:44: created activity listener: 127.0.1.1:35600
2025-11-04T15:15:25Z ERRO acl/manager.go:137: failed to apply firewall rule: PeerIP:"100.66.138.245" Protocol:ALL PolicyID:"d2q5tqbj1d1s73c0sopg", add firewall rule: failed to check rule: running [/usr/sbin/iptables -t filter -C NETBIRD-ACL-INPUT -m set --set nb0000004 src -j ACCEPT --wait]: exit status 2: --set option deprecated, please use --match-set
iptables v1.8.9 (legacy): Set nb0000004 doesn't exist.

Try `iptables -h' or 'iptables --help' for more information.

2025-11-04T15:15:25Z INFO acl/manager.go:67: ACL rules processed in: 9.981435ms, total rules count: 0
2025-11-04T15:15:51Z INFO [peer: pLUrifmM9pHyu0wgiFd6bZsHlKWihwB6Oo2EUyhcyXE=] activity/listener_udp.go:81: closing activity listener: 127.0.1.1:48216
2025-11-04T15:15:51Z INFO [peer: pLUrifmM9pHyu0wgiFd6bZsHlKWihwB6Oo2EUyhcyXE=] activity/listener_udp.go:54: exit from activity listener

To Reproduce

Steps to reproduce the behavior:

Go to '...'
Click on '....'
Scroll down to '....'
See error

Expected behavior

A clear and concise description of what you expected to happen.

Are you using NetBird Cloud?

self-host

NetBird version

0.59.11

Is any other VPN software installed?

no

Debug output

To help us resolve the problem, please attach the following anonymized status output

netbird status -dA

Create and upload a debug bundle, and share the returned file key:

netbird debug for 1m -AS -U

Uploaded files are automatically deleted after 30 days.

Alternatively, create the file only and attach it here manually:

netbird debug for 1m -AS

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

Add any other context about the problem here.

Have you tried these troubleshooting steps?

Reviewed client troubleshooting (if applicable)
Checked for newer NetBird versions
Searched for similar issues on GitHub (including closed ones)
Restarted the NetBird client
Disabled other VPN software
Checked firewall settings

Originally created by @xcstatus on GitHub (Nov 4, 2025). Original GitHub issue: https://github.com/netbirdio/netbird/issues/4744 **Describe the problem** In the Buildroot , NETBIRD-ACL-INPUT is empty. 2025-11-04T15:14:01Z INFO [peer: iXOo+g9DEA/CRHkyf6JGubQrElAGdJnOZKbOZacUmUE=] peer/conn.go:262: peer connection closed 2025-11-04T15:14:01Z INFO [peer: iXOo+g9DEA/CRHkyf6JGubQrElAGdJnOZKbOZacUmUE=] manager/manager.go:286: start activity monitor 2025-11-04T15:14:01Z INFO [peer: iXOo+g9DEA/CRHkyf6JGubQrElAGdJnOZKbOZacUmUE=] activity/listener_udp.go:44: created activity listener: 127.0.1.1:35600 2025-11-04T15:15:25Z ERRO acl/manager.go:137: failed to apply firewall rule: PeerIP:"100.66.138.245" Protocol:ALL PolicyID:"d2q5tqbj1d1s73c0sopg", add firewall rule: failed to check rule: running [/usr/sbin/iptables -t filter -C NETBIRD-ACL-INPUT -m set --set nb0000004 src -j ACCEPT --wait]: exit status 2: --set option deprecated, please use --match-set iptables v1.8.9 (legacy): Set nb0000004 doesn't exist. Try `iptables -h' or 'iptables --help' for more information. 2025-11-04T15:15:25Z INFO acl/manager.go:67: ACL rules processed in: 9.981435ms, total rules count: 0 2025-11-04T15:15:51Z INFO [peer: pLUrifmM9pHyu0wgiFd6bZsHlKWihwB6Oo2EUyhcyXE=] activity/listener_udp.go:81: closing activity listener: 127.0.1.1:48216 2025-11-04T15:15:51Z INFO [peer: pLUrifmM9pHyu0wgiFd6bZsHlKWihwB6Oo2EUyhcyXE=] activity/listener_udp.go:54: exit from activity listener **To Reproduce** Steps to reproduce the behavior: 1. Go to '...' 2. Click on '....' 3. Scroll down to '....' 4. See error **Expected behavior** A clear and concise description of what you expected to happen. **Are you using NetBird Cloud?** self-host **NetBird version** ` 0.59.11` **Is any other VPN software installed?** no **Debug output** To help us resolve the problem, please attach the following anonymized status output netbird status -dA Create and upload a debug bundle, and share the returned file key: netbird debug for 1m -AS -U *Uploaded files are automatically deleted after 30 days.* Alternatively, create the file only and attach it here manually: netbird debug for 1m -AS **Screenshots** If applicable, add screenshots to help explain your problem. **Additional context** Add any other context about the problem here. **Have you tried these troubleshooting steps?** - [ ] Reviewed [client troubleshooting](https://docs.netbird.io/how-to/troubleshooting-client) (if applicable) - [ ] Checked for newer NetBird versions - [ ] Searched for similar issues on GitHub (including closed ones) - [ ] Restarted the NetBird client - [ ] Disabled other VPN software - [ ] Checked firewall settings

saavagebueno added the client triage-needed labels 2026-08-05 01:24:37 -04:00

saavagebueno commented

2026-08-05 01:24:37 -04:00

@nazarewk commented on GitHub (Nov 4, 2025):

disclaimer: not too familiar with Buildroot other than basic info

Why would you run a VPN inside of Buildroot? What version of (linux I assume?) kernel? That deprecation message is interesting.

@nazarewk commented on GitHub (Nov 4, 2025): disclaimer: not too familiar with Buildroot other than basic info Why would you run a VPN inside of Buildroot? What version of (linux I assume?) kernel? That deprecation message is interesting.

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Reference: DYNR/netbird#10097