"off": Use default_pools."geo": Use region_pools/country_pools/pop_pools. For non-proxied requests, the country for country_pools is determined by location_strategy."random": Select a pool randomly."dynamic_latency": Use round trip time to select the closest pool in default_pools (requires pool health checks)."proximity": Use the pools' latitude and longitude to select the closest pool using the Cloudflare PoP location f"dynamic_latency"