FreeBSD Bugzilla – Attachment 154831 Details for
Bug 198927
if_msk TCP fragmentation causes NFS mount fail
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single packet from Wireshark dump
msk.txt (text/plain), 12.01 KB, created by
Beeblebrox
on 2015-03-26 15:13:26 UTC
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Description:
single packet from Wireshark dump
Filename:
MIME Type:
Creator:
Beeblebrox
Created:
2015-03-26 15:13:26 UTC
Size:
12.01 KB
patch
obsolete
>No. Time Source Destination Protocol Length Info > 17096 21.751006000 192.168.2.1 192.168.2.38 TCP 1514 [TCP Retransmission] 2049â680 [ACK] Seq=1032357 Ack=9805 Win=1864128 Len=1448 TSval=577536242 TSecr=4563[Reassembly error, protocol TCP: New fragment overlaps old data (retransmission?)] > >Frame 17096: 1514 bytes on wire (12112 bits), 1514 bytes captured (12112 bits) on interface 0 > Interface id: 0 (lan0) > Encapsulation type: Ethernet (1) > Arrival Time: Mar 26, 2015 16:43:20.879413000 EET > [Time shift for this packet: 0.000000000 seconds] > Epoch Time: 1427381000.879413000 seconds > [Time delta from previous captured frame: 2.120985000 seconds] > [Time delta from previous displayed frame: 2.120985000 seconds] > [Time since reference or first frame: 21.751006000 seconds] > Frame Number: 17096 > Frame Length: 1514 bytes (12112 bits) > Capture Length: 1514 bytes (12112 bits) > [Frame is marked: False] > [Frame is ignored: False] > [Protocols in frame: eth:ethertype:ip:tcp] > [Coloring Rule Name: Bad TCP] > [Coloring Rule String: tcp.analysis.flags && !tcp.analysis.window_update] >Ethernet II, Src: TendaTec_dd:22:61 (c8:3a:35:dd:22:61), Dst: SamsungE_22:19:2a (e8:11:32:22:19:2a) > Destination: SamsungE_22:19:2a (e8:11:32:22:19:2a) > Address: SamsungE_22:19:2a (e8:11:32:22:19:2a) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > Source: TendaTec_dd:22:61 (c8:3a:35:dd:22:61) > Address: TendaTec_dd:22:61 (c8:3a:35:dd:22:61) > .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) > .... ...0 .... .... .... .... = IG bit: Individual address (unicast) > Type: IP (0x0800) >Internet Protocol Version 4, Src: 192.168.2.1 (192.168.2.1), Dst: 192.168.2.38 (192.168.2.38) > Version: 4 > Header Length: 20 bytes > Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport)) > 0000 00.. = Differentiated Services Codepoint: Default (0x00) > .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00) > Total Length: 1500 > Identification: 0x8cbf (36031) > Flags: 0x02 (Don't Fragment) > 0... .... = Reserved bit: Not set > .1.. .... = Don't fragment: Set > ..0. .... = More fragments: Not set > Fragment offset: 0 > Time to live: 64 > Protocol: TCP (6) > Header checksum: 0x0000 [validation disabled] > [Good: False] > [Bad: False] > Source: 192.168.2.1 (192.168.2.1) > Destination: 192.168.2.38 (192.168.2.38) > [Source GeoIP: Unknown] > [Destination GeoIP: Unknown] >Transmission Control Protocol, Src Port: 2049 (2049), Dst Port: 680 (680), Seq: 1032357, Ack: 9805, Len: 1448 > Source Port: 2049 (2049) > Destination Port: 680 (680) > [Stream index: 0] > [TCP Segment Len: 1448] > Sequence number: 1032357 (relative sequence number) > [Next sequence number: 1033805 (relative sequence number)] > Acknowledgment number: 9805 (relative ack number) > Header Length: 32 bytes > .... 0000 0001 0000 = Flags: 0x010 (ACK) > 000. .... .... = Reserved: Not set > ...0 .... .... = Nonce: Not set > .... 0... .... = Congestion Window Reduced (CWR): Not set > .... .0.. .... = ECN-Echo: Not set > .... ..0. .... = Urgent: Not set > .... ...1 .... = Acknowledgment: Set > .... .... 0... = Push: Not set > .... .... .0.. = Reset: Not set > .... .... ..0. = Syn: Not set > .... .... ...0 = Fin: Not set > Window size value: 29127 > [Calculated window size: 1864128] > [Window size scaling factor: 64] > Checksum: 0xd729 [validation disabled] > [Good Checksum: False] > [Bad Checksum: False] > Urgent pointer: 0 > Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps > No-Operation (NOP) > Type: 1 > 0... .... = Copy on fragmentation: No > .00. .... = Class: Control (0) > ...0 0001 = Number: No-Operation (NOP) (1) > No-Operation (NOP) > Type: 1 > 0... .... = Copy on fragmentation: No > .00. .... = Class: Control (0) > ...0 0001 = Number: No-Operation (NOP) (1) > Timestamps: TSval 577536242, TSecr 4563 > Kind: Time Stamp Option (8) > Length: 10 > Timestamp value: 577536242 > Timestamp echo reply: 4563 > [SEQ/ACK analysis] > [iRTT: 0.000502000 seconds] > [Bytes in flight: 11428] > [TCP Analysis Flags] > [Expert Info (Note/Sequence): This frame is a (suspected) retransmission] > [This frame is a (suspected) retransmission] > [Severity level: Note] > [Group: Sequence] > [The RTO for this segment was: 5.238531000 seconds] > [RTO based on delta from frame: 17083] >[Reassembly error, protocol TCP: New fragment overlaps old data (retransmission?)] > [Expert Info (Error/Malformed): New fragment overlaps old data (retransmission?)] > [New fragment overlaps old data (retransmission?)] > [Severity level: Error] > [Group: Malformed] > >0000 e8 11 32 22 19 2a c8 3a 35 dd 22 61 08 00 45 00 ..2".*.:5."a..E. >0010 05 dc 8c bf 40 00 40 06 00 00 c0 a8 02 01 c0 a8 ....@.@......... >0020 02 26 08 01 02 a8 3f 89 28 6e 62 c0 57 3f 80 10 .&....?.(nb.W?.. >0030 71 c7 d7 29 00 00 01 01 08 0a 22 6c 80 f2 00 00 q..)......"l.... >0040 11 d3 00 00 00 00 1a 00 00 00 00 00 00 00 5a 14 ..............Z. >0050 00 00 12 00 0b 00 50 9e 03 00 00 00 00 00 06 00 ......P......... >0060 00 00 00 00 00 00 ce 04 00 00 12 00 0b 00 80 9e ................ >0070 01 00 00 00 00 00 c6 02 00 00 00 00 00 00 7c 12 ..............|. >0080 00 00 12 00 0b 00 a0 bf 02 00 00 00 00 00 89 01 ................ >0090 00 00 00 00 00 00 7d 0a 00 00 12 00 0b 00 e0 c2 ......}......... >00a0 01 00 00 00 00 00 45 00 00 00 00 00 00 00 84 0e ......E......... >00b0 00 00 12 00 0b 00 80 9f 03 00 00 00 00 00 6d 00 ..............m. >00c0 00 00 00 00 00 00 fa 0a 00 00 12 00 0b 00 e0 c5 ................ >00d0 01 00 00 00 00 00 0a 00 00 00 00 00 00 00 3b 04 ..............;. >00e0 00 00 12 00 0b 00 00 97 01 00 00 00 00 00 1e 00 ................ >00f0 00 00 00 00 00 00 e7 13 00 00 12 00 0b 00 a0 69 ...............i >0100 03 00 00 00 00 00 68 06 00 00 00 00 00 00 7d 0c ......h.......}. >0110 00 00 12 00 0b 00 60 99 03 00 00 00 00 00 77 00 ......`.......w. >0120 00 00 00 00 00 00 c2 0b 00 00 12 00 0b 00 00 e4 ................ >0130 01 00 00 00 00 00 87 05 00 00 00 00 00 00 11 06 ................ >0140 00 00 11 00 18 00 f8 9a 25 00 00 00 00 00 08 00 ........%....... >0150 00 00 00 00 00 00 69 07 00 00 12 00 0b 00 80 c7 ......i......... >0160 01 00 00 00 00 00 14 00 00 00 00 00 00 00 c5 0d ................ >0170 00 00 12 00 0b 00 20 07 02 00 00 00 00 00 2a 00 ...... .......*. >0180 00 00 00 00 00 00 3c 12 00 00 12 00 0b 00 c0 cd ......<......... >0190 03 00 00 00 00 00 16 01 00 00 00 00 00 00 71 07 ..............q. >01a0 00 00 12 00 0b 00 a0 c7 01 00 00 00 00 00 13 00 ................ >01b0 00 00 00 00 00 00 7e 0b 00 00 12 00 0b 00 10 b3 ......~......... >01c0 01 00 00 00 00 00 1c 00 00 00 00 00 00 00 9d 0a ................ >01d0 00 00 12 00 0b 00 b0 d9 01 00 00 00 00 00 2d 00 ..............-. >01e0 00 00 00 00 00 00 3b 0a 00 00 12 00 0b 00 60 c2 ......;.......`. >01f0 01 00 00 00 00 00 45 00 00 00 00 00 00 00 b4 10 ......E......... >0200 00 00 12 00 0b 00 30 31 04 00 00 00 00 00 4c 01 ......01......L. >0210 00 00 00 00 00 00 18 0e 00 00 12 00 0b 00 40 21 ..............@! >0220 04 00 00 00 00 00 07 01 00 00 00 00 00 00 a6 0e ................ >0230 00 00 11 00 18 00 c8 99 25 00 00 00 00 00 08 00 ........%....... >0240 00 00 00 00 00 00 8c 05 00 00 12 00 0b 00 60 b8 ..............`. >0250 03 00 00 00 00 00 26 00 00 00 00 00 00 00 a0 0d ......&......... >0260 00 00 12 00 0b 00 10 b9 03 00 00 00 00 00 11 00 ................ >0270 00 00 00 00 00 00 0c 0d 00 00 12 00 0b 00 40 f9 ..............@. >0280 01 00 00 00 00 00 00 01 00 00 00 00 00 00 1c 0c ................ >0290 00 00 12 00 0b 00 c0 b8 03 00 00 00 00 00 41 00 ..............A. >02a0 00 00 00 00 00 00 43 03 00 00 11 00 13 00 a0 51 ......C........Q >02b0 25 00 00 00 00 00 40 01 00 00 00 00 00 00 ce 0b %.....@......... >02c0 00 00 12 00 0b 00 20 19 02 00 00 00 00 00 1e 00 ...... ......... >02d0 00 00 00 00 00 00 da 16 00 00 12 00 0b 00 a0 b2 ................ >02e0 03 00 00 00 00 00 20 00 00 00 00 00 00 00 df 10 ...... ......... >02f0 00 00 12 00 0b 00 20 9c 02 00 00 00 00 00 25 00 ...... .......%. >0300 00 00 00 00 00 00 d0 10 00 00 12 00 0b 00 b0 7e ...............~ >0310 02 00 00 00 00 00 50 00 00 00 00 00 00 00 32 0f ......P.......2. >0320 00 00 11 00 17 00 e8 8f 25 00 00 00 00 00 08 00 ........%....... >0330 00 00 00 00 00 00 0e 0b 00 00 12 00 0b 00 60 b3 ..............`. >0340 01 00 00 00 00 00 47 00 00 00 00 00 00 00 fc 08 ......G......... >0350 00 00 12 00 0b 00 a0 cb 01 00 00 00 00 00 1a 00 ................ >0360 00 00 00 00 00 00 3c 15 00 00 12 00 0b 00 30 c4 ......<.......0. >0370 01 00 00 00 00 00 14 00 00 00 00 00 00 00 e1 08 ................ >0380 00 00 12 00 0b 00 b0 b7 01 00 00 00 00 00 1e 00 ................ >0390 00 00 00 00 00 00 88 0f 00 00 11 00 18 00 c8 9c ................ >03a0 25 00 00 00 00 00 04 00 00 00 00 00 00 00 e9 16 %............... >03b0 00 00 11 00 17 00 34 90 25 00 00 00 00 00 04 00 ......4.%....... >03c0 00 00 00 00 00 00 ca 02 00 00 11 00 18 00 f0 9a ................ >03d0 25 00 00 00 00 00 01 00 00 00 00 00 00 00 32 15 %.............2. >03e0 00 00 12 00 0b 00 20 b5 01 00 00 00 00 00 14 00 ...... ......... >03f0 00 00 00 00 00 00 1d 02 00 00 12 00 0b 00 20 2e .............. . >0400 04 00 00 00 00 00 c2 00 00 00 00 00 00 00 1c 17 ................ >0410 00 00 12 00 0b 00 b0 da 03 00 00 00 00 00 a6 00 ................ >0420 00 00 00 00 00 00 84 09 00 00 12 00 0b 00 70 d6 ..............p. >0430 01 00 00 00 00 00 0f 00 00 00 00 00 00 00 2e 15 ................ >0440 00 00 12 00 0b 00 b0 37 03 00 00 00 00 00 8e 00 .......7........ >0450 00 00 00 00 00 00 20 04 00 00 12 00 0b 00 e0 96 ...... ......... >0460 01 00 00 00 00 00 06 00 00 00 00 00 00 00 6c 13 ..............l. >0470 00 00 12 00 0b 00 60 9a 03 00 00 00 00 00 a5 00 ......`......... >0480 00 00 00 00 00 00 d4 07 00 00 12 00 0b 00 90 b2 ................ >0490 01 00 00 00 00 00 1f 00 00 00 00 00 00 00 16 15 ................ >04a0 00 00 12 00 0b 00 40 38 03 00 00 00 00 00 a8 01 ......@8........ >04b0 00 00 00 00 00 00 29 11 00 00 12 00 0b 00 00 2b ......)........+ >04c0 03 00 00 00 00 00 28 00 00 00 00 00 00 00 56 11 ......(.......V. >04d0 00 00 11 00 13 00 e0 73 25 00 00 00 00 00 f8 0c .......s%....... >04e0 00 00 00 00 00 00 db 13 00 00 11 00 18 00 98 95 ................ >04f0 25 00 00 00 00 00 08 00 00 00 00 00 00 00 cb 15 %............... >0500 00 00 12 00 0b 00 e0 5a 03 00 00 00 00 00 8d 02 .......Z........ >0510 00 00 00 00 00 00 64 16 00 00 12 00 0b 00 10 9f ......d......... >0520 03 00 00 00 00 00 70 00 00 00 00 00 00 00 60 18 ......p.......`. >0530 00 00 12 00 0b 00 d0 27 04 00 00 00 00 00 13 01 .......'........ >0540 00 00 00 00 00 00 d5 0b 00 00 12 00 0b 00 30 18 ..............0. >0550 02 00 00 00 00 00 e1 00 00 00 00 00 00 00 83 05 ................ >0560 00 00 12 00 0b 00 b0 c4 03 00 00 00 00 00 26 00 ..............&. >0570 00 00 00 00 00 00 40 07 00 00 12 00 0b 00 b0 c9 ......@......... >0580 01 00 00 00 00 00 3c 00 00 00 00 00 00 00 f0 11 ......<......... >0590 00 00 12 00 0b 00 f0 2d 04 00 00 00 00 00 2a 00 .......-......*. >05a0 00 00 00 00 00 00 58 05 00 00 12 00 0b 00 b0 a4 ......X......... >05b0 01 00 00 00 00 00 9f 00 00 00 00 00 00 00 87 15 ................ >05c0 00 00 12 00 0b 00 40 58 03 00 00 00 00 00 b9 00 ......@X........ >05d0 00 00 00 00 00 00 ae 0a 00 00 12 00 0b 00 f0 d5 ................ >05e0 01 00 00 00 00 00 45 00 00 00 ......E...
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bug 198927
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