Regarding libc6, I'm not sure what the issue is, but I'll keep that in mind.

Regarding the changeset, yes, Mike replied with that, too, and it worked.

Thanks for your prompt reply, and for the packages.

- Scott

From: Franck Joncourt <>
Sent: Sun, February 28, 2010 4:47:04 PM
Subject: Re: [Fwknop-discuss] Two issues - debian package vs building from source, and server and random ports error


On Sun, Feb 28, 2010 at 01:05:17PM -0800, wrote:
> Tried getting fwknop 1.9.12 server working via .deb install on Ubuntu 8.04, but
> couldn't. It installed, but I couldn't get it to open the port. My current
> theory as to why is there is some kind of conflict involving libpcap0.7 (.deb
> dependency) and libpcap0.8 (which was already installed).

As a matter of fact, fwknop-server does not require a build dependency against
libpcap. It is libnet-pcap-perl which requires it, and libnet-pcap-perl is a
dependency of fwknop-server. So, I would say libpcap is not to blame.

It looks more like a problem with libc6 if you need to rebuild the package from

> So I switched to building the server from source. That went fine. All 303 tests
> passed.
> Over on the 1.9.12 client, also running on an Ubuntu 8.04 vm, which I installed
> via .deb, after building the server from source I was now able to access the
> desired port if I sent my request to a specific server port. But when I tried
> to send the packet to a random server port, but I got the following error
> message:
> client command:
> fwknop -A tcp/22 -a --rand-port -D
> error message:
> Cannot use --Server-port and --rand-port at the same time at /usr/bin/fwknop
> line 977.
> So I switched to building the client from source. Retried the client command;
> got the same error message.
> Any idea what's wrong?

Michael fixed it here:


That should be easy to fix, then. No need to rebuild anything, just patch


Franck Joncourt

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