9.3 Remote recursive folder creation with SFTP
9.4 libssh blocking and infinite loop problem
9.5 Cygwin: "WARNING: UNPROTECTED PRIVATE KEY FILE!"
+ 9.6 wolfssh: all tests fail
10. Connection
10.1 --interface with link-scoped IPv6 address
https://github.com/curl/curl/issues/11244
+9.6 wolfssh: all tests fail
+
+ Something fundamental stops them all from working properly.
+
+ https://github.com/curl/curl/issues/16794
+
10. Connection
10.1 --interface with link-scoped IPv6 address