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Connection tracking entries are synchronized only from the Master to the Backup device.
When both sync-connection-tracking and preemption-mode are enabled, and a router with higher VRRP priority becomes online, the connections get synchronized first, and only then the router with higher priority becomes the VRRP master.
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If multiple VRRP interfaces are configured between two units, then it is enough to enable sync-connection-tracking=yes on one (preferably master) VRRP interface. |
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