esx.problem.net.e1000.tso6.notsupported
Summary
Guest-initiated IPv6 TCP Segmentation Offload (TSO) packets ignored. Manually disable TSO inside the guest operating system, or use a different virtual adapter.
Causes
There is an issue with VM network configuration on this host.
Resolutions
Check VMs network configuration. For more information, review the VMware KB article TCP Segmentation Offload (TSO) over IPv6 with e1000 Virtual Adapters (1009548).
External
Refer to the VMware Online Documentation for more information on vCenter event messages and possible solutions.