Edit: /proc/12/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 TcpTimeoutRehash
TcpExt: 2128 3129 4995 5335 0 0 0 246 158 0 1284400 211 0 0 958 561420 18018 146016 8403 8407 30192270 637080623 774863460 453 55684 1 54189 435 8605 247 1124 250 21555 46227 315 225 929 1505239 18768 49680 541500 5842 117 1604 0 25044966 144754 1091 232270 47 7600 19477 0 2752 0 1 0 0 0 50 119344 60 0 0 0 85265 782352 142841 15 0 0 2400645 4 0 2131 0 1450 6184548 1237800 0 1121 3484 1629 0 5 0 0 0 45 5 19 0 262662337 2 2 290 15263 21042955245 14468 23437499 251071 35675933 156 332 257 0 107 43 8381 0 0 0 21035445316 0 493027 0 0 0 51004
IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets InBcastOctets OutBcastOctets InCsumErrors InNoECTPkts InECT1Pkts InECT0Pkts InCEPkts ReasmOverlaps
IpExt: 0 0 3416 0 268314 0 411071230586 29833349299679 122976 0 68158061 0 0 1522837632 1386 51391 0 0
MPTcpExt: MPCapableSYNRX MPCapableSYNTX MPCapableSYNACKRX MPCapableACKRX MPCapableFallbackACK MPCapableFallbackSYNACK MPFallbackTokenInit MPTCPRetrans MPJoinNoTokenFound MPJoinSynRx MPJoinSynAckRx MPJoinSynAckHMacFailure MPJoinAckRx MPJoinAckHMacFailure DSSNotMatching InfiniteMapRx OFOQueueTail OFOQueue OFOMerge NoDSSInWindow DuplicateData AddAddr EchoAdd PortAdd AddAddrDrop MPJoinPortSynRx MPJoinPortSynAckRx MPJoinPortAckRx MismatchPortSynRx MismatchPortAckRx RmAddr RmAddrDrop RmSubflow MPPrioTx MPPrioRx 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