Came across this after I filed my bugreport ... Gerald Turner wrote:
> Hello, looks like the bug in fw_conntrack is a bashism with the use of
> the shell built-in read.
bashism is not the right word for it.
> $ read MAX < /proc/sys/net/ipv4/netfilter/ip_conntrack_max
>
> # bash:
> $ echo $MAX
> 65536
>
> # dash (and zsh too!):
> $ echo $MAX
> 6
The difference is: bash reads buffers, dash (and also probably zsh)
reads single bytes, something the /proc/sys/ interface doesn't like.
Personally, I'd like to call that a kernel bug while other just tend
to say that procfs isn't fully POSIX compliant and therefore it's SEP.
There's a bugreport against dash[1], and mine against the kernel[2].
However, I doubt any of these will have any effect soon.
Christoph
[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=595063
[2] https://bugzilla.kernel.org/show_bug.cgi?id=19182
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