EDIT 2024-09-25, 13h00: It was a DDoS on ESR IP classes. It's filtered.
EDIT 14h00:
Official communication: (translated quote) “Starting this early morning, we are experiencing a lot of slowliness and/or cutoff on the main input/output ENSL network. All tools and external network zones are impacted.”
PSMN's gateways are impacted.