Bonding driver reports illegal loopback occurred on adapter when using Mellanox ConnectX-4 (mlx5) NICs
Issue
-
System has an LACP bond with
mlx5_enbased interfaces and the bonding driver repeatedly logs the following messages:Feb 27 10:08:42 localhost kernel: bond0: An illegal loopback occurred on adapter (eno1) Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports Feb 27 10:09:12 localhost kernel: bond0: An illegal loopback occurred on adapter (eno1) Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports Feb 27 10:09:42 localhost kernel: bond0: An illegal loopback occurred on adapter (eno1) Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports Feb 27 10:10:12 localhost kernel: bond0: An illegal loopback occurred on adapter (eno1) Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports Feb 27 10:10:42 localhost kernel: bond0: An illegal loopback occurred on adapter (eno1) Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports
Environment
- Red Hat Enterprise Linux (RHEL) 8
- Red Hat Enterprise Linux (RHEL) 7
- bonding, LACP mode
- Mellanox ConnectX-4 (mlx5_en based) hardware
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