I just saw now that my Duniter v1 node (g1.brussels.ovh) had issues last night, and so did all others linked in Ginspecte.
Between 04/08/2025 22:10:45 (UTC) and 05/08/2025 00:39:37 (UTC).
So I guess there is nothing I could do to prevent that in the future ? (in my node configuration or …)
Edit: I just saw this post mentionning it might have been a DOS attack: