Wireshark mailing list archives

Re: Npcap 0.04 call for test


From: Pascal Quantin <pascal.quantin () gmail com>
Date: Mon, 24 Aug 2015 10:19:47 +0200

2015-08-24 3:38 GMT+02:00 Yang Luo <hsluoyb () gmail com>:

Hi list,

In latest 0.04 r6 version, I have used 0x02, 0x00, 0x00, 0x00 for an IPv4
packet and 0x18, 0x00, 0x00, 0x00 for an IPv6 packet (tell me if you have
better value for IPv6). The driver can return NdisMediumNull now for
loopback interface. Wireshark seems to work now, one little issue is that
in the "Characteristics" tab in loopback interface's "Interface Details",
"Media supported" and "Medium in use" shows (0xffffffff) instead of a
understandable string, this is because that the source code lacks the -1 to
string mapping.

Latest installer is at:
https://svn.nmap.org/nmap-exp/yang/NPcap-LWF/npcap-nmap-0.04-r6.exe

Cheers,
Yang


Hi Yang,

any reason for not using NdisMediumLoopback that is defined since Vista
according to
https://msdn.microsoft.com/en-us/library/windows/hardware/ff565910%28v=vs.85%29.aspx
? Maybe it would make sense to switch to DLT_LOOPBACK in that case (in that
case the packet type must be put in network order).
Note that Wireshark would still display the raw value: I'm gonna update the
array.
Any reason for not making the NULL/loopback mode default instead of the
fake ethernet header?

Cheers,
Pascal.
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