Hi there.
Supermicro X7SBi has lost the network (both NICs) after reboot during upgrade from ESXi 5.0U2 to ESXi 5.1 via Update Manager.
Local console displays ESXi 5.1 version and correct IP settings.
After manual reboot host starts responding to ping for about 6 seconds then disappears again.
Has anyone encountered something like that?