Windows 10 sendPacket not working
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- Dominant language
- C
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Description
System: Windows 10 1904
npcap : npcap-sdk-1.07.zip npcap-1.20.exe
I ping ip by ping 10.0.61.1 -n 1 and copy as hex stream from Wireshark.
Then send by
int pcap_sendpacket(pcap_t *, const u_char *, int);
Ping request show in Wireshark. But no response(remote ip is good).
Wireshark screenshot:

This is test pcap file:
icmp.zip
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the Windows 10 case with the supplied icmp.zip capture and the pcap_sendpacket call, then compare the transmitted packet and response in Wireshark. Determine why the ping receives no response and document or correct the behavior, with a reproducible verification using the same capture and environment.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- networking, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100