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Beniamino Galvani authored
NM sometimes brings an interface temporarily down (for example to change a VLAN MAC to align it to the parent interface's one). When this happens, any recv() or send() in n-acd fails, the n-acd instance is reset to the initial state and a DOWN event is reported to the manager, which currently does not handle it. The result is an inconsistent state. There is no simple way of dealing with the DOWN event in the manager. What we can do instead is to: - ignore errors during recv() because there is really nothing we can do, except for waiting timeouts to expire; - during probe, ignore errors during send() so that we don't exceed the probe timeout; - during announcement, retry after a send() error to ensure we send all 3 announcements. https://bugzilla.redhat.com/show_bug.cgi?id=1578675
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