RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=849787
As currently configured, dnsmasq for a virtual network will pass some
queries upstream toward the Internet. This includes AAAA and MX queries
as well a A queries when dnsmasq cannot answer for that name. This is
occurring whether a domain name is specified or not. The problem is that
dnsmasq will, by default, forward all queries unless "local=" is
specified. I cannot envision a situation where such queries should be
forwarded.
See the bugzilla report for more info. While I did a lot of testing to
figure out the problem and what needed to be done to fix it, I am unable
to actually rebuild the libvirt rpm in my environment.
The solution is the following patch:
diff -uNr libvirt-0.9.11.4.orig/src/network/bridge_driver.c
libvirt-0.9.11.4/src/network/bridge_driver.c
--- libvirt-0.9.11.4.orig/src/network/bridge_driver.c 2012-06-15
14:23:21.000000000 -0400
+++ libvirt-0.9.11.4/src/network/bridge_driver.c 2012-08-21
09:03:17.387602485 -0400
@@ -491,7 +491,13 @@
virCommandAddArgList(cmd, "--strict-order", "--bind-interfaces",
NULL);
if (network->def->domain)
- virCommandAddArgList(cmd, "--domain", network->def->domain, NULL);
+// virCommandAddArgList(cmd, "--domain", network->def->domain,
NULL);
+ virCommandAddArgFormat(cmd,
+ "--domain %s --local=/%s/",
+ network->def->domain,
+ network->def->domain);
+ else
+ virCommandAddArg(cmd, "--local=");
if (pidfile)
virCommandAddArgPair(cmd, "--pid-file", pidfile);
--
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