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Wireshark mac address3/22/2023 ![]() ![]() Locale C, with light display mode, with HiDPI, with libpcap version 1.9.1, with I9-9980HK CPU 2.40GHz (with SSE4.2), with 32768 MB of physical memory, with Running on Mac OS X 10.16, build 20D74 (Darwin 20.3.0), with Intel(R) Core(TM) With Zstandard, with Snappy, with libxml2 2.9.9, with QtMultimedia, withĪutomatic updates using Sparkle, with SpeexDSP (using system library), with Kerberos, with MaxMind DB resolver, with nghttp2 1.39.2, with brotli, with LZ4, Randomized_Probe_Requests.pcapng Relevant logs and/or screenshotsĬompiled (64-bit) with Qt 5.12.6, with libpcap, without POSIX capabilities, with See Randomized Probe Requests.pcapng attached What is the expected correct behavior?Ĭurrently, this is expected behavior as current tools do not provide for bitwise masking within a nibble. Enable Private Wi-Fi Address in Settings > Wi-Fi > info button for current network > Private Address Capture layer 2 WLAN traffic with an Apple. Randomized and non-randomized addresses are included in the results. Attempt to filter for MAC address whose second most significant nibble is a 2,6,A,or E using this display filter wlan.addr & 0x02.Capture layer 2 WLAN traffic with an Apple iOS device running iOS 14. ![]() Enable Private Wi-Fi Address in Settings > Wi-Fi > info button for current network > Private Address.Examples include management WLAN traffic, such as Probe Requests which are randomized during network discovery, and Authentication and Association frames which are randomized during WLAN association. For example:īecause most WLAN frames are either encrypted or do not carry an Ethernet header, analysis of the local and group Ethernet bits is not viable. This is because the bitwise AND operator is not granular enough to mask bits within the 4-bit nibble. This results in the second character matching 2, 6, a, or e as follows.īitwise AND will be true when attempting the following display filter. These MAC addresses follow RFC 7042 (section 2.1) rules where the second least significant bit of the 48-bit MAC address' most significant byte is set signifying that it is locally administered. Many device manufacturers now randomize the MAC address during WLAN discovery, and again during WLAN association. Please consider providing a mask that applies to bits within a nibble or compiling a change to the 802.11 protocol dissector that would apply to wlan.addr, wlan.ta, wlan.ra, wlan.da, and wlan.sa filters. Provide a more granular way to filter MAC addresses. ![]()
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