CMMVC9383E The command failed because changing MTU value is not allowed for ethernet port which is already configured for RDMA clustering.

Explanation
This error can occur if an attempt is made to change the maximum transmission unit (MTU) value of
an RDMA-capable Ethernet port while the port is configured for RDMA clustering.

User response
Change the MTU value for RDMA-capable Ethernet ports only on ports that are not configured for
RDMA clustering.