Disabling host key checking on LAN

[Nico Kadel-Garcia]

On Fri, Aug 28, 2015 at 11:51 PM, Walter Carlson <wlcrls47 at gmail.com> wrote:
> On Thu, Aug 27, 2015 at 12:26 AM, Walter Carlson <wlcrls47 at gmail.com> wrote:
>
>> Perfect, thanks.  This winds up working for me (as far as I've tested so
>> far.)
>>
>> Match exec "ping -q -c 1 -t 1 %n | grep '192\.168\.'"
>>    StrictHostKeyChecking no
>>    UserKnownHostsFile none
>>
>
> For the record, the last line has to be "UserKnownHostsFile /dev/null".  I
> saw "none" being used in others' openssh examples, but for me, that's using
> the file ~/none rather than being interpreted as "don't use one".

If you've installed the relevant "bind-utils" or similar DNS package,
can't you ust use "host %n  | grep ' 192\.168\\." ? It's faster than
running ping, especially for non-responsive hosts.