https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=16484
Bug ID: 16484
Summary: OUI lookup tool - flag requests with IG or LG bit set
Product: Web sites
Version: N/A
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: Enhancement
Priority: Low
Component: Main site - www.wireshark.org
Assignee: bugzilla-ad...@wireshark.org
Reporter: bubbas...@gmail.com
Target Milestone: ---
Build Information:
Paste the COMPLETE build information from "Help->About Wireshark", "wireshark
-v", or "tshark -v".
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There is no absolute rule for mapping a MAC address to a BSSID.
But it seems "pretty common"(TM) that the OUI from the MAC is used after
setting the LG bit.
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory
default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
In this example the LG bit is cleared between first and second entries:
OUI search
22:ad:56
20:ad:56
Results
20:AD:56 Continen Continental Automotive Systems Inc.
Others have run into similar issues:
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10633
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13296
Would it be possible to check if the LG bit is set and produce a result that
indicates the user should dig deeper. As nice as it would be to automate, not
sure its safe to assume the bit can be cleared and resubmit in all cases.
I have a set of data with LG bit set but have not encountered any with IG set.
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