Dual-home ENI routings for RHEL

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I have a RHEL9 EC2 instance with dual-home ENI cards. One interface is located in the data subnet which suppose to handle data related communications, the other one is in the management subnet which is for management purpose. When they talk back to the on premise network, firewall rules must be applied.

We have quickly identified, traffic is being blocked by firewall even firewall is being opened. Further…