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Description of problem:
When configure a isolated network by libvirt, the option of dnsmasq generated by libvirt contains '--dhcp-option=3', but there is no option for us to configure this option,look, I need to set another option '--dhcp-option=6' to disable dnsmasq send default dns server.

Version-Release number of selected component (if applicable):
libvirt-0.10.2-18.el6

How reproducible:
100%

Steps to Reproduce:
1.create a isolated virtual network with virsh net-define or net-create
2. ps ax|grep dnsmasq

  
Actual results:


Expected results:


Additional info:

Kill the dnsmasq manually and execute a new dnsmasq cmdline (with right dncp option), does this works?

You only need a interface in xml to configure the dhcp-option?

This is being worked on under bug 637055. See, for example, the following email on libvirt-list: https://www.redhat.com/archives/libvir-list/2013-March/msg00166.html

*** This bug has been marked as a duplicate of bug 637055 ***

(In reply to comment #1)
> Kill the dnsmasq manually and execute a new dnsmasq cmdline (with right dncp
> option), does this works?
> 
> You only need a interface in xml to configure the dhcp-option?

yes , I need an option to configure dnsmasq with '--dhcp-option=6'

*** This bug has been marked as a duplicate of bug 637055 ***