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Warning: Unable to process unsupported DLT type: Ethernet (0x1) #835

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KatherineJXY opened this issue Dec 13, 2023 · 3 comments
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Warning: Unable to process unsupported DLT type: Ethernet (0x1) #835

KatherineJXY opened this issue Dec 13, 2023 · 3 comments
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KatherineJXY commented Dec 13, 2023 •
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I was trying to replay the packets using the tcpreplay tool and got an error: "Warning: Unable to process unsupported DLT type: Ethernet (0x1)."
tcpreplay version: 4.4.3
Pcap file: https://pages.cs.wisc.edu/~tbenson/IMC_DATA/univ1_trace.tgz
Any clues?
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fklassen commented Jun 9, 2024 •
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Your captures are full of malformed packets. Tcpreplay is simply dropping the invalid ones. found some packets in trace that are wrongly flagged as bad packets. I'll fix those, but other packets in this trace are just bad.
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@fklassen fklassen closed this as completed Jun 9, 2024
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fklassen commented Jun 9, 2024

After more review, determined that some EtherType I packets are wrongly flagged as as bad. For example, packet #114 in test.pcap.

@fklassen fklassen reopened this Jun 9, 2024
@fklassen fklassen added bug and removed not a bug labels Jun 9, 2024
@fklassen fklassen self-assigned this Jun 9, 2024
fklassen added a commit that referenced this issue Jun 9, 2024
@fklassen
Bug #835 - improved flow_decode error messages
d7f5bfe 
Support packet numbers and warnings for all failing paths
fklassen added a commit that referenced this issue Jun 9, 2024
@fklassen
Bug #835 - proper 802.3 (Ethernet I) handling
887077e 
We can only support IPv4 and IPv6. Suppress warning for other protocols.

Also add extra checks for invalid types and lengths.
fklassen added a commit that referenced this issue Jun 9, 2024
@fklassen
Merge pull request #880 from appneta/Bug_#835_false_unsupported_DLT_w…
724bdaf 
…arnings

Bug #835 false unsupported dlt warnings on 802.3 (Ethernet I) and LLC
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fklassen commented Jun 9, 2024

Fixed in PR #880

@fklassen fklassen closed this as completed Jun 9, 2024
@angolo40 angolo40 mentioned this issue Jul 16, 2024
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@github-project-automation github-project-automation bot moved this to Done in 4.5 Aug 27, 2024
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