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527968d433
IPv6 RA always contains an implicit default route via the link-local address of the source of RA. This forces the guest to install a route via isolated network, which may disturb the guest's networking in case of multiple interfaces. More info in 013427e6e733f7a662f4e8a9c11f7dad4cd65e3f. The validity of this route is controlled by "default [route] lifetime" field of RA. If the lifetime is set to 0 seconds, then no route is installed by receiver. dnsmasq 2.67+ supports "ra-param=<interface>,<RA interval>,<default lifetime>" option. We pass "ra-param=*,0,0" (here, RA_interval=0 means default) to disable default gateway in RA for isolated networks.
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>