Disable ssdp

Hi, I’m trying to disable SSDP on my home assistant container installation, but with no luck.
My configuration.yaml DOES NOT contains entry for default_config: nor for ssdp: and zeroconf: but homeassistant keep getting port 1900, discovering new devices and writing this on the log:

(MainThread) [homeassistant.bootstrap] Setting up stage 1: {'usb', 'http', 'zeroconf', 'api', 'ssdp', 'network', 'websocket_api', 'bluetooth'}

What should I change to disable ssdp ? Thanks

Did you ever find an answer? I also can not disable it.