There seems to be a bug in the implementation of LSO for vmxnet3 on Solaris 11.1, it is sending 16K packets (larger than MTU) which are not delivered to the ESXi host.
See my blog post for a deep analysis - http://blog.cyberexplorer.me/2013/03/improving-vm-to-vm-network-throughput.html
I am also seeing a bug in the installer, which I don't think is part of this project, any idea how to contact the vmware team?
Thanks for reporting this issue.
I have shared the LSO issue with development team responsible for vmxnet3. I will update once I hear back from them.
In order to contact VMware team, either open a support case or login to VMware communities website.