When s3.domainName is set, all bucket-prefix routes were gated on a
matching Host header. Requests that arrive via an IP, an unlisted
hostname, or a reverse proxy that rewrites Host hit no router and bounce
back as 405/404 (and 503 once a proxy maps the upstream error).
Register the path-style catch-all unconditionally, after the
host-specific routers, so it only fires when no Host matcher applies.
Chris LuandGitHub
58c3fa802c