addc0f4 created the issue

Url can't be found if:

• protocol WEBDAV (both HTTP or HTTPS)
• url has more than the single address or host (es. https:/blabla.com/webdav)

10 attemps to connect, then: DNS failed to convert name..

Same result if IP address used instead of domain name: http://1.2.3.4/webdav or https://1.2.3.4/webdav

Client never reached the server (checked on server side using wireshark)

No DNS request from Cyberduck using local IPs, if using Bonjour resolved name or DNS public host, resolve request is "blabla.com/webdav", so DNS can't resolve correctly.

Error is suppose is due to wrong name resolving (NAME to IP conversion must be done only for blabla.com and not for blabla.com/webdav). Simple IP URL connection may be the same: Cyberduck search connection for 1.2.3.4/webdav and not 1.2.3.4 and then webdav subfolder.

WinSCP works and MAC remote disk mount works well.