| Package | Affected versions | Patched versions |
|---|---|---|
| ios xe | = 17.3.3 | |
| ieee 802.2 | ≤ 802.2h-1997 | |
| p802.1q | ≤ d1.0 |
Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers.
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