ogra@styx:~$ snappy-remote --url=ssh://ubuntu@192.168.2.25 install /home/ogra/fhem-demo.ogra_5.6-6_armhf.snap
The authenticity of host '192.168.2.25 (192.168.2.25)' can't be established.
ECDSA key fingerprint is 9d:6d:c4:84:2e:2b:75:27:a0:a2:91:c8:19:86:12:b0.
Are you sure you want to continue connecting (yes/no)? yes
WARNING, trying automatic key setup, if it fails use --pub-key [path-to-key] or input your password on every request.
ubuntu@192.168.2.25's password: 

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Installing /home/ogra/fhem-demo.ogra_5.6-6_armhf.snap from local environment

issues while running ssh command: Installing /tmp/fhem-demo.ogra_5.6-6_armhf.snap
2015/06/10 17:14:24 Signature check failed, but installing anyway as requested