Traefik bouncer not connecting to LAPI

Hello everyone,

I'm facing a very persistent issue with the Traefik bouncer in a Docker Compose setup and I'm running out of ideas after extensive debugging.
For context, this whole setup is running on a mini-PC with Debian.

The Goal: A standard setup with Traefik as a reverse proxy, protected by CrowdSec.

The Core Problem: The Traefik bouncer never communicates with the LAPI. The output of cscli bouncers list consistently shows an empty Last API pull for the traefik-bouncer, while manual tests work perfectly

traefik_conf/dynamic.yml (fichier de conf dynamique) :

Summary of Debugging Steps (Everything we've tried)

The bouncer fails silently. Traefik's DEBUG logs show the plugin being loaded and the middleware being applied to routers, but there is never an error or any log line indicating a connection attempt to the LAPI.

Has anyone ever encountered such a persistent, silent failure? Could this point to a deeper, more obscure issue with the host environment (Docker networking stack, iptables, kernel version)?

Thanks in advance for any insights!