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b538cdd5a9
This is detailed in: https://bugzilla.redhat.com/show_bug.cgi?id=688957 Since radvd is executed by daemonizing it, the attempt to exec the radvd binary doesn't happen until after libvirtd has already received an exit code from the intermediate forked process, so no error is detected or logged by __virExec(). We can't require radvd as a prerequisite for the libvirt package (many installations don't use IPv6, so they don't need it), so instead we add in a check to verify there is an executable radvd binary prior to trying to exec it.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>