By default EEE should be disabled, if not you can disable it using ethtool using the following commands:

To check the status of the intel nic:

ethtool --show-eee <INTERFACE_NAME>

To disable EEE on a NIC:

ethtool --set-eee <INTERFACE_NAME> eee off

EEE could also be disabled in the NICs settings using Intels Lanfonf tool.