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Laine Stump authored
Some of the tests perform operations on the tap device of the test domain's network interface. They mostly assume that this tap device is named "vnet0", which is the case if there is no other domain running on the host, but isn't true if some other domain was running. This patch adds a utility function NetworkHelpers::get_first_interface_target_dev($dom), which learns the name of the tap device for the first interface in the domain, and uses the result of that function instead of "vnet0". Signed-off-by: Laine Stump <laine@laine.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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