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The functions - iptablesAddForwardDontMasquerade(), - iptablesRemoveForwardDontMasquerade handle exceptions in the masquerading implemented in the POSTROUTING chain of the "nat" table. Such exceptions should be added as chronologically latest, logically top-most rules. The bridge driver will call these functions beginning with the next patch: some special destination IP addresses always refer to the local subnetwork, even though they don't match any practical subnetwork's netmask. Packets from virbrN targeting such IP addresses are never routed outwards, but the current rules treat them as non-virbrN-destined packets and masquerade them. This causes problems for some receivers on virbrN. Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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>