From: Dirk Heilemann (dirk.heilemann@telindus.de)
Date: Mon Apr 15 2002 - 10:46:03 CEST
Hi Folks, Hello Michele,
First:
We pay some vendors a fortune for a 12h response time. And usually that's
all we get: A response - never a solution.
And here we have a free product and a solution on the next day. I really do
appreciate that! Michele, you are great.
Second:
The new version works for me - but I did some tests and found problems with
other IPs than mine.
E.g. 192.168.1.1 with the same netmask (255.255.254.0) does not work at all.
Your calculations are correct:
ip_network 192.168.0.0
ip_broadcast 192.168.1.255
The problem occurs when the configure() part is called.
Regards,
Dirk
> On Thu, Apr 11, 2002 at 05:08:02PM +0200, Dirk Heilemann wrote:
> > I located the problem in the /usr/bin/ip_network script.
> > Other netmasks than /8 /16 /24 do not work.
> > But I don't know how to change it.
>
> I solved the problem, enhancing a little the "expr" command: now it
> is able to to logical bitwise operation such
>
> # expr 4 & 255
> # expr ~ 4
>
> etc (must quote \&, \~).
> After that, I changed the ip_network and the ip_broadcast AWK script,
> calling the external program expr (ugly, but awk do not seems to
> support this kind of C language operation).
>
> The theory used (if I'm not wrong) is:
>
> network= ip & mask
> broadcast = ip | ~mask
>
> I've the ipfix.tgz (only 13k) and send to you now via attachment.
> In the archive, also the new busybox (for the expr).
>
> Michele
> --
> I keep trying to locate a meeting of Quantum Physicists. But everytime
> they set a meeting time, the location changes. And vice versa -- Anonymous
>
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