Hi,
I'm facing this issue when i'm trying to connect to the host(Isilon version 9.4) was working fine with previous versions.
below attached from the server
KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org ,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c.
Auth.log says "Unable to negotiate with x.x.x.x port 53564: no matching host key type found. Their offer: ssh-rsa,ssh-dss [preauth]"