Second review: only a refused port 3389 means xrdp is off. A name that
doesn't resolve, a timeout or no route now say so, rather than telling the
person to turn on Developer Mode. All are Unreachable (a 400, no error
diagnostic). The .rdp file name is a digest of the address, since
fe80::1%2 and fe80::1:2 sanitised to the same name.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>