Hi,
We have had similar issues we are using the Intell X710. Every few weeks since upgrading to ESXi 6.5 the networking on one of our hosts has been locking up. We stumbled across the below article which described the issue well and also mentions disabling the i40en driver.
Install ESXi 6.5 on R730 with Intel X710 |VMware Communities
Note we were on firmware version 1.3.1, did this issue get resolved with an upgrade to 1.4.3 NIC Driver for Intel Ethernet Controllers X710?
Looking in some forums some people ordered new nics to get around the issue.
Craig
