Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)CreditsEtienne Champetier (@champtar) <champetier.etienne@gmail.com>Referenceshttps://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/https://standards.ieee.org/ieee/802.2/1048/https://standards.ieee.org/ieee/802.1Q/10323/https://kb.cert.org/vuls/id/855201https://blog.champtar.fr/VLAN0_LLC_SNAP/
