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Thomas Haller authored
For routes and the default-route from NDisc, set the router preference RTA_PREF. Also, previously, we would only configure one IPv6 default-route. That by itself was not really a problem, as long as NetworkManager would always make sure that it configured the route to the ~best~ router. Actually, NM should have done that already. It keeps the list of gateways sorted, and prefers them according to their preference. But maybe it didn't, so we have bug rh#1445417 (??). Change that by configuring a default-route for all gateways, with appropriate router prefrence. In case, kernel doesn't support RTA_PREF yet, only configure all routes that share the same maxiumum preference. https://bugzilla.redhat.com/show_bug.cgi?id=1445417
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