Dropbear SSH integrity error

Zbynek Michl zbynek.michl at gmail.com
Thu Nov 12 17:28:27 AWST 2015


Hello,

I have a problem with SSH connection from my Ubiquiti AirOS device to
a Mikrotik router.
I use AirOS v5.5.11 (Dropbear SSH client v2013.58) and Mikrotik's
RouterOS version 6.33 (also older versions have the same problem).

# ssh demo at demo.mt.lv
ssh: Connection to demo at demo.mt.lv:22 exited: Integrity error (bad
packet size -22146333)

Note: demo at demo.mt.lv is publicly accessible demo box usually with the
latest version of RouterOS installed.

It seems that this is a general bug of Dropbear SSH client (I have
tried a different versions and all of them are problematic). I can
access Mikrotik from my computer with no problem (OpenSSH_6.0p1).

Any idea how to fix it?

Thanks,
Zbynek


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