{"record":{"id":"5277f8f447cbe5f0","repo":"netbirdio/netbird","slug":"list-chains-v","errorCode":null,"errorMessage":"list chains: %v","messagePattern":"list chains: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"client/firewall/nftables/router_linux.go","lineNumber":1331,"sourceCode":"\t}\n\n\tipt, err := iptables.NewWithProtocol(r.iptablesProto())\n\tif err != nil {\n\t\tlog.Debugf(\"iptables not available, using nftables to remove filter rules: %v\", err)\n\t\treturn r.removeAcceptRulesFromTable(r.filterTable)\n\t}\n\n\tif err := r.removeAcceptFilterRulesIptables(ipt); err != nil {\n\t\tlog.Debugf(\"iptables removal failed (table may be incompatible), falling back to nftables: %v\", err)\n\t\treturn r.removeAcceptRulesFromTable(r.filterTable)\n\t}\n\treturn nil\n}\n\nfunc (r *router) removeAcceptRulesFromTable(table *nftables.Table) error {\n\tchains, err := r.conn.ListChainsOfTableFamily(table.Family)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"list chains: %v\", err)\n\t}\n\n\tfor _, chain := range chains {\n\t\tif chain.Table.Name != table.Name {\n\t\t\tcontinue\n\t\t}\n\n\t\tif chain.Name != chainNameForward && chain.Name != chainNameInput {\n\t\t\tcontinue\n\t\t}\n\n\t\tif err := r.removeAcceptRulesFromChain(table, chain); err != nil {\n\t\t\treturn err\n\t\t}\n\t}\n\n\treturn r.conn.Flush()\n}","sourceCodeStart":1313,"sourceCodeEnd":1349,"githubUrl":"https://github.com/netbirdio/netbird/blob/93e97f4bf1ad715072dcb3fb6cdb1763431b5a9c/client/firewall/nftables/router_linux.go#L1313-L1349","documentation":"Error \"list chains: %v\" thrown in netbirdio/netbird.","triggerScenarios":"Thrown at client/firewall/nftables/router_linux.go:1331 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"}