Hey, thanks for your replies.
I didn’t even had a gunicorn.conf so first I upgraded from 6.1.1 to current release. Then django said:
[ERROR] django.security.DisallowedHost:80 response_for_exception Invalid HTTP_HOST header: '127.0.0.1:8000'. You may need to add u'127.0.0.1' to ALLOWED_HOSTS.
I did that in seahub_settings.py and now it works! Also closed public port 8000.
I tried both bind = “0.0.0.0:8000” and “localhost:8000”, both seem to work