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You'll need to disable spoof checking on your SR-IOV switches. When you bond the interfaces in the guests, the bond changes the interface MAC. An SR-IOV switch usually drops any frames which are not from its own PF or VFs. This is called spoof check. Other than that, this should work fine.


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Like fukawi2 said, the bond is fine, the IP addressing is the problem. Do you really have 10.0.0.0/16 configured on your LAN? Is it possibly 10.0.0.0/24 instead? Or some other IP range? Don't use ifconfig and route, they are obsolete. Instead use ip address and ip route.


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With your switch being configured to balance based on layers 3+4 (IP and port), you'd likely see a separate interface used for each data stream. Say you've got several connections from a single endpoint using a range of tcp ports. The switch will almost always choose a separate interface for each tcp session. I've only seen it happen once in several hundred ...


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Don't test bonding link failure with commands, pull the cable. If you read ifdown, it actually unenslaves an interface from a bond before setting it down. This does nothing to test bonding failover under the conditions you want to survive a failover, this just tests the bonding driver's ability to have its active slave changed. You're lucky enough that ...



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