flow_dissector: do not dissect PPPoE PFC frames

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-46306 · Microsoft / collected KEV context

cve-program · CVE-2026-46306

• https://git.kernel.org/stable/c/e7c811ca372d53c2be7d01a1614e71fae1054836
• https://git.kernel.org/stable/c/abc5bc84e0f2edc7ea2d437afa6ef3fe1fc43200
• https://git.kernel.org/stable/c/18ae9eacfc95cc715c0606b2c86e8aa8a86cf3e3
• https://git.kernel.org/stable/c/db104b0d8a7856397c0469d83a4289adf7c54863
• https://git.kernel.org/stable/c/6044392d9cace3a3672b02c8bc7d38b502e51734
• https://git.kernel.org/stable/c/0d00b9015069712944934bab09eaa6c542143049
• https://git.kernel.org/stable/c/7c93f353eab4ea911e394630f07d72e040a729d8
• https://git.kernel.org/stable/c/d6c19b31a3c1d519fabdcf0aa239e6b6109b9473

No related operational record is retained in the current change model.