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VLAN tagged frames not able to see in the Wireshark capture.

asked 2024-08-07 19:22:28 +0000

I'm using the Windows 11 Enterprise in laptop, I tried this method https://www.intel.com/content/www/us/... and also enabled the VLAN tag enable din my adaptor. I tried this method in Intel(R) Ethernet Connection (16) I219-LM and ASIX USB to Gigabit Ethernet Family Adapter #2 but none of the option work for me. I updated NPCAP to latest version as well.

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Current npcap issue 171: vlan-tagging is missing ?

Chuckc gravatar imageChuckc ( 2024-08-08 00:24:54 +0000 )edit

Possibly the perennial Windows driver issue of stripping tags. See also https://wiki.wireshark.org/CaptureSet....

Regardless, this isn't a Wireshark issue, it's an npcap or driver issue.

grahamb gravatar imagegrahamb ( 2024-08-08 15:03:16 +0000 )edit

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answered 2024-08-08 18:59:33 +0000

André gravatar image

Next to the MonitorModeEnabled = 1 setting in the registry, as described on the Intel page, you also need to disable the "Priority & VLAN" in the Ethernet Controller adapter properties.
Only then the stripping of VLAN tags is disabled and passed on unchanged to npap.

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Asked: 2024-08-07 19:22:28 +0000

Seen: 313 times

Last updated: Aug 08