Suricata

Recently reviewed and attempted to create coverage on Windows IKEv2 vulnerability which lead me to find that Suricata only carves buffers for nonce and key exchange payloads but here having access to a buffer for the Encrypted Payload would have been convenient.

https://www.zerodayinitiative.com/blog/2026/4/22/cve-2026-33824-remote-code-execution-in-windows-ikev2

It would great to have the rest of the IKE payloads given keyword buffers.
RFC: https://datatracker.ietf.org/doc/html/rfc4306

Additionally, it'd be great to have a keyword for Next Payload which contains all `next payload` values (in sequence) or for each payload a keyword (ike.encrypt_payload_next).