A Kubernetes cluster that uses overlay networking, may result in an issue with the VxLAN configuration for the cluster. Nodes that are affected by the issue display errors similar to the following in the dmesg output:

[  610.495450] bnxt_en 0000:00:03.0 ens3: hwrm req_type 0xa1 seq id 0x67
error 0xf
[  610.498246] bnxt_en 0000:00:03.0 ens3: hwrm_tunnel_dst_port_alloc failed.
rc:15

This issue is commonly caused when the tx offload feature is enabled in the bnxt_en driver module. You can resolve this issue by disabling the tx offload feature using the ethtool command. For example:

$ sudo ethtool --offload $(ip -o -4 route show to default | awk '{print $5}') tx off