{"record":{"id":"f06571ab6d17bf2d","repo":"netbirdio/netbird","slug":"add-netlink-monitor-w","errorCode":null,"errorMessage":"add netlink monitor: %w","messagePattern":"add netlink monitor: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"client/firewall/nftables/external_chain_monitor_linux.go","lineNumber":150,"sourceCode":"\t\t\t}\n\t\t\tif !isRelevantMonitorEvent(ev) {\n\t\t\t\tcontinue\n\t\t\t}\n\t\t\tresetDebounce(debounce, pending)\n\t\t\tpending = true\n\t\t}\n\t}\n}\n\nfunc (m *externalChainMonitor) subscribe() (chan *nftables.MonitorEvent, func(), error) {\n\tconn := &nftables.Conn{}\n\tmon := nftables.NewMonitor(\n\t\tnftables.WithMonitorAction(nftables.MonitorActionNew),\n\t\tnftables.WithMonitorObject(nftables.MonitorObjectChains|nftables.MonitorObjectTables),\n\t)\n\tevents, err := conn.AddMonitor(mon)\n\tif err != nil {\n\t\treturn nil, nil, fmt.Errorf(\"add netlink monitor: %w\", err)\n\t}\n\treturn events, func() { _ = mon.Close() }, nil\n}\n\n// resetDebounce reschedules a pending debounce timer without leaking a stale\n// fire on its channel. pending must reflect whether the timer is armed.\nfunc resetDebounce(t *time.Timer, pending bool) {\n\tif pending && !t.Stop() {\n\t\tselect {\n\t\tcase <-t.C:\n\t\tdefault:\n\t\t}\n\t}\n\tt.Reset(externalMonitorReconcileDelay)\n}\n\nfunc (m *externalChainMonitor) reconcile() {\n\tif err := m.reconciler.reconcileExternalChains(); err != nil {","sourceCodeStart":132,"sourceCodeEnd":168,"githubUrl":"https://github.com/netbirdio/netbird/blob/93e97f4bf1ad715072dcb3fb6cdb1763431b5a9c/client/firewall/nftables/external_chain_monitor_linux.go#L132-L168","documentation":"Error \"add netlink monitor: %w\" thrown in netbirdio/netbird.","triggerScenarios":"Thrown at client/firewall/nftables/external_chain_monitor_linux.go:150 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"93e97f4bf1ad715072dcb3fb6cdb1763431b5a9c","analyzedAt":"2026-08-16T03:09:19.136Z","schemaVersion":2},"datasetVersion":"2026-08-16T08:17:34.114Z"}