Vulnerability CVE-2021-27854
Published: 2022-09-27

Description:
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.

 References:
https://standards.ieee.org/ieee/802.2/1048/
https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/
https://standards.ieee.org/ieee/802.1Q/10323/
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