autossh incompatibility with dropbear -y

[Catalin Patulea]

You could always write a small wrapper script that adds whatever
command-line arguments you need, and pass *that* to autossh.

#!/bin/sh
exec path/to/dropbear -y "$@"

On Fri, Oct 4, 2013 at 12:31 PM, Steve Newcomb <srn at coolheads.com> wrote:
> I'm using OpenWRT.  My router, whose IP address changes unpredictably,
> makes its ssh-listening port available on another host running at a
> stable IP address, using autossh/dropbear to create a reverse channel.
>
> Sometimes the host's key changes from time to time, which can stop the
> autossh process at a prompt (to nobody) to decide what to do about the
> change.
>
> Ordinary OpenSSH has a StrictHostKeyChecking option which can be used to
> bypass the so-called "ask" prompt and just make the connection regardless.
>
> By reading the source, I learned that Dropbear's ssh client evidently
> has a similar feature, the "-y" invocation option.  But I can't pass the
> -y to it via autossh because autossh doesn't approve of it.  Dropbear's
> ssh client also does not offer a config file utility, AFAIK.
> Dropbear evidently ignores all -o options, too; they wind up in a bit
> bucket called something like "dummy".
>
> Does anybody know the answer, short of editing/recompiling autossh so it
> won't be so persnickety and just get out of the way?
>
> Steve Newcomb