Michael Albinus wrote:
> gdb won't help. I've extended the patch (appended), so it writes traces
> to your tmp directory in parallel. Could you pls try?
> 
> There should be a file /tmp/*debug tramp mock netbsd93.bruno.haible.de*
> which might tell us the story.

Find attached the resulting log files. They don't have the file names that
you expected, but anyway.