Description of problem:
Using ethereal, I found that the following packet was
beeing generated:

M-Search: * HTTP/1.1\r\n
:1900\r\n
MAN: "ssdp:discover"\r\n
MX: 3\r\n
ST: upnp:rootdevice
\r\n

When in fact the original intention was this:

M-Search: * HTTP/1.1\r\n
HOST: 239.255.255.0:1900\r\n
MAN: "ssdp:discover"\r\n
MX: 3\r\n
ST: upnp:rootdevice
\r\n

This caused unpredictable behaviour, some devices
answer, but some devices refuse to do so. The following
patch fixes this issue. I consider this a serious fix,
which should imply in a new minor version release.

Version-Release number of selected component (if applicable):
1.3.1

How reproducible:
Always

Additional info:
The patch is probably good for FC-5 too.
This patch has been previously submitted to the original project here:
https://sourceforge.net/tracker/?func=detail&aid=1488876&group_id=7189&atid=307189

Also, the original project seems to have been abandoned by the developers, but
another project has forked, so attention should be paid to where are the next
versions comming from:
home page of the project: http://www.virtualworlds.de/upnp/
SourceForge home page: http://sourceforge.net/projects/pupnp/

I don't understand what has gone behind the scenes, I am just reporting my
findings here. There are several other patches that have not been applied to the
software, which I am not quite aware of their gravity, but they seem to have
been applied to the new project.

New 1.4.0 version available for test in devel tree.