Use case or problem
Mermaid as integrated in Obsidian does not support the available packet syntax (packet-beta).
Proposed solution
Update the Mermaid included in Obsidian to the current version.
Current workaround (optional)
Instead of describing a network packet using text and it rendering via Mermaid in Obsidian, I paste images created elsewhere. Pasted images require more storage and aren’t editable in Obsidian.