[libvirt] DHCP and secure containers

Gene Czarcinski gczarcinski at gmail.com
Tue Sep 2 10:37:09 UTC 2014


OK, hopefully this mailing list is more active and I can get some 
response to my questions.
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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?  I not only want 
to find the problem but to fix the problem if needed.

Gene




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