Chelsio Communications T62100-LP-CR 2-Port 40/50/100GbE Low Profile Uwire Adapter with PCI-E X16 Gen 3, 32K Conn Qsfp28 Connector

Got this for a point to point link between a vsphere host and a linux storage (NAS) host. Chelsio drivers only available for certain specific base kernels. On top of that, it worked fine as long as I didn't try to turn on offloading (which was the whole point of getting these!) Once I did that, CentOS started throwing mysterious errors, and vsphere was getting NFS timeouts. support.chelsio.com totally unresponsive, even when contacted by the pre-sales guy I pinged. Returning...