Hello, the SSH developers of several FOSS implementations agreed to remove support for SSHv1. The libssh project supports SSHv1 on the client side. libssh 0.8 will be the last release with SSHv1 support. After the release we will remove all SSHv1 related code.
If you haven't done yet you should move to SSHv2 as soon as possible.
-- The libssh team
