I have been "playing with" Secure Containers running a lighttpd server
and have it up and running.  I used Adam's process 
(https://www.happyassassin.net/2014/07/23/bridged-networking-for-libvirt-with-networkmanager-2014-fedora-21/)
for getting a bridge defined when also running NetworkManager.  I then 
created a virtual network definition:> <network>
>   <name>net18</name>
>   <uuid>8d19a05b-ac85-4e2a-88bc-5ca4cbb29a33</uuid>
>   <forward mode='bridge'/>
>   <bridge name='br0'/>
> </network>
This works fine when I use static addresses such as:> -N source=net18,address=192.168.18.94/24,route=192.168.18.255%192.168.18.1
but does not work when I specify using dhcp:> -N source=net18,dhcp
I have reported this as a bug: 
https://bugzilla.redhat.com/show_bug.cgi?id=1133686
Since there has not been much of a reaction to the BZ report, I decided 
to take a look at the source code (it sure would have been nice if the 
SRPMS were there in the F20 fedora-virt-preview but I get the package 
from development/21).
I see that libvirt-sandbox-init-common.c has the code for starting dhcp 
and also has main() along with some runtime options for -v verbose and 
-d debug.
OK, how do I go about turning verbose and/or debug on?
Any suggestions on how to debug and get dhcp to work?  Is this the 
correct mailing list?
Gene