{ "server_url": "http://127.0.0.1:8080", "listen_addr": "0.0.0.0:8080", "private_key_path": "private.key", "derp_map_path": "derp.yaml", "ephemeral_node_inactivity_timeout": "30m", "db_type": "sqlite3", "db_path": "db.sqlite", "tls_letsencrypt_hostname": "", "tls_letsencrypt_listen": ":http", "tls_letsencrypt_cache_dir": ".cache", "tls_letsencrypt_challenge_type": "HTTP-01", "tls_cert_path": "", "tls_key_path": "", "acl_policy_path": "" }