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What is this trying to do anyhow? If the addr has truely changed why
does the bind fail?

When the active physical link member of bonding interface in active-standby
mode gets faulty, the standby link will represent the assigned addresses on
behalf of the active link.
Therefore, RDMA communication manager will notify iSER target with
RDMA_CM_EVENT_ADDR_CHANGE.

Ah, here is my recollection...

However I think that if we move that into a work, we should do it
periodically until we succeed or until the endpoint is torn down so
we can handle address removed and restore use-cases.

That soudns better, but still I would say this shouldn't even happen
in the first place, check the address and don't initiate rebinding if
it hasn't changed.

But don't you need to setup a new cm_id for the this notification? It
will remain active?

Also it's a bit cumbersome to match addresses in some cases like multi
address interfaces. Almost seems easier to setup a new one...