Edit: /proc/4/net/netstat (0B)
TcpExt: SyncookiesSent SyncookiesRecv SyncookiesFailed EmbryonicRsts PruneCalled RcvPruned OfoPruned OutOfWindowIcmps LockDroppedIcmps ArpFilter TW TWRecycled TWKilled PAWSActive PAWSEstab DelayedACKs DelayedACKLocked DelayedACKLost ListenOverflows ListenDrops TCPHPHits TCPPureAcks TCPHPAcks TCPRenoRecovery TCPSackRecovery TCPSACKReneging TCPSACKReorder TCPRenoReorder TCPTSReorder TCPFullUndo TCPPartialUndo TCPDSACKUndo TCPLossUndo TCPLostRetransmit TCPRenoFailures TCPSackFailures TCPLossFailures TCPFastRetrans TCPSlowStartRetrans TCPTimeouts TCPLossProbes TCPLossProbeRecovery TCPRenoRecoveryFail TCPSackRecoveryFail TCPRcvCollapsed TCPBacklogCoalesce TCPDSACKOldSent TCPDSACKOfoSent TCPDSACKRecv TCPDSACKOfoRecv TCPAbortOnData TCPAbortOnClose TCPAbortOnMemory TCPAbortOnTimeout TCPAbortOnLinger TCPAbortFailed TCPMemoryPressures TCPMemoryPressuresChrono TCPSACKDiscard TCPDSACKIgnoredOld TCPDSACKIgnoredNoUndo TCPSpuriousRTOs TCPMD5NotFound TCPMD5Unexpected TCPMD5Failure TCPSackShifted TCPSackMerged TCPSackShiftFallback TCPBacklogDrop PFMemallocDrop TCPMinTTLDrop TCPDeferAcceptDrop IPReversePathFilter TCPTimeWaitOverflow TCPReqQFullDoCookies TCPReqQFullDrop TCPRetransFail TCPRcvCoalesce TCPOFOQueue TCPOFODrop TCPOFOMerge TCPChallengeACK TCPSYNChallenge TCPFastOpenActive TCPFastOpenActiveFail TCPFastOpenPassive TCPFastOpenPassiveFail TCPFastOpenListenOverflow TCPFastOpenCookieReqd TCPFastOpenBlackhole TCPSpuriousRtxHostQueues BusyPollRxPackets TCPAutoCorking TCPFromZeroWindowAdv TCPToZeroWindowAdv TCPWantZeroWindowAdv TCPSynRetrans TCPOrigDataSent TCPHystartTrainDetect TCPHystartTrainCwnd TCPHystartDelayDetect TCPHystartDelayCwnd TCPACKSkippedSynRecv TCPACKSkippedPAWS TCPACKSkippedSeq TCPACKSkippedFinWait2 TCPACKSkippedTimeWait TCPACKSkippedChallenge TCPWinProbe TCPKeepAlive TCPMTUPFail TCPMTUPSuccess TCPDelivered TCPDeliveredCE TCPAckCompressed TCPZeroWindowDrop TCPRcvQDrop TCPWqueueTooBig TCPFastOpenPassiveAltKey TcpTimeoutRehash TcpDuplicateDataRehash TCPDSACKRecvSegs TCPDSACKIgnoredDubious TCPMigrateReqSuccess TCPMigrateReqFailure
TcpExt: 42795 874 235 66618 36 0 0 221 0 0 1878436 404 0 0 11913 32481878 4168 198658 21422 22220 161041522 24218601 201518502 17 66875 142 261929 2808 3228 594 2293 15390 8734 202353 127 4818 9000 229895 130913 3392149 261645 17346 4 13340 2 30549 195172 397 123433 522 10551 452920 0 21167 0 0 0 0 984 1339 69891 7406 0 5 0 53228 160217 521321 0 0 0 4502333 0 0 42795 0 0 7625857 131877 0 504 39108 1246 0 0 0 0 0 7140 0 3290 0 1007677 2067 2067 3136 2087401 317803655 2466 252510 5935 475999 43280 4769 3234 7 939 15075 1564 1445719 0 0 314101615 1772 3964 0 0 0 0 330156 23431 125764 1196 0 0
IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets InBcastOctets OutBcastOctets InCsumErrors InNoECTPkts InECT1Pkts InECT0Pkts InCEPkts ReasmOverlaps
IpExt: 0 0 0 5 0 0 53377349927 198952276419 0 200 0 0 0 347463689 3977 385878 497 0
MPTcpExt: MPCapableSYNRX MPCapableSYNTX MPCapableSYNACKRX MPCapableACKRX MPCapableFallbackACK MPCapableFallbackSYNACK MPCapableEndpAttempt MPFallbackTokenInit MPTCPRetrans MPJoinNoTokenFound MPJoinSynRx MPJoinSynBackupRx MPJoinSynAckRx MPJoinSynAckBackupRx MPJoinSynAckHMacFailure MPJoinAckRx MPJoinAckHMacFailure DSSNotMatching DSSCorruptionFallback DSSCorruptionReset InfiniteMapRx DSSNoMatchTCP DataCsumErr OFOQueueTail OFOQueue OFOMerge NoDSSInWindow DuplicateData AddAddr EchoAdd PortAdd AddAddrDrop MPJoinPortSynRx MPJoinPortSynAckRx MPJoinPortAckRx MismatchPortSynRx MismatchPortAckRx RmAddr RmAddrDrop RmSubflow MPPrioTx MPPrioRx MPFailTx MPFailRx RcvPruned SubflowStale SubflowRecover
MPTcpExt: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0