Package release compatibility (iptables for instance)

[Thiers Botelho]

This one might be slightly OT, but any answers would be highly educational 
for noobies like me (hope many others too).

I just received, from  fedora-announce, info on updated  iptables 1.2.9-1.0. That'd be

 
http://www.redhat.com/archives/fedora-announce-list/2004-February/msg00004.html

It happens that the announcement mentions a new config option (IPTABLES_MODULES_UNLOAD), so I went to iptables.org in order to learn some more about it.

I couldn't find anything there on the topic ( 
http://iptables.org/files/changes-iptables-1.2.9.txt ) ; then it downed on 
me that the Fedora update is 1.2.9-1.0 - this trailing _1.0_ suffix is nowhere to be found on iptables.org (I might as well have 
missed something there).

But the whole point I'd like to understand is more general and not 
iptables-specific at all . 

Although it is stated that FC is a _community effort_ , all updates are 
published by _someone at redhat.com_ . 

Then I ask - when RH updates a package in FC, might it make some 
ADDITIONAL change to the original package ? I'm asking this due to the _1.0_ and to the new switch which is not mentioned on the original changelog.

And BTW (might be relevant for any repliers) - I'm not a Linux user yet. 
Just have made a dual-boot install at work but had no time to get my hands 
dirty, so for the moment I'm learning what I can from mailing lists.

Thnx

Thiers