We are having a problem that the network adapter disappears from the virtual machine. When editing the settings of the machine the NIC is no longer in it.
When we look at the virtual center tasks and events there is no event indicating the removal of the network card. Below I am sending the log.
Oct 27 09:15:44.828: vcpu-0| GuestRpc: Channel 2, conflict: guest application toolbox-dnd tried to register, but it is still registered on channel 1
Oct 27 09:15:44.828: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:15:44.828: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:17:05.564: vcpu-0| TOOLS unified loop capability requested by 'toolbox-dnd'; now sending options via TCLO
Oct 27 09:17:06.159: vcpu-0| GuestRpc: Channel 2, conflict: guest application toolbox-dnd tried to register, but it is still registered on channel 1
Oct 27 09:17:06.160: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:17:06.160: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:17:12.939: vcpu-0| TOOLS unified loop capability requested by 'toolbox-dnd'; now sending options via TCLO
Oct 27 09:17:12.952: vcpu-0| GuestRpc: Channel 2, conflict: guest application toolbox-dnd tried to register, but it is still registered on channel 1
Oct 27 09:17:12.952: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:17:12.952: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:18:15.697: vcpu-0| TOOLS unified loop capability requested by 'toolbox-dnd'; now sending options via TCLO
Oct 27 09:18:15.731: vcpu-0| GuestRpc: Channel 2, conflict: guest application toolbox-dnd tried to register, but it is still registered on channel 1
Oct 27 09:18:15.731: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:18:15.732: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:19:27.023: vcpu-0| TOOLS unified loop capability requested by 'toolbox-dnd'; now sending options via TCLO
Oct 27 09:19:27.024: vcpu-0| GuestRpc: Channel 2, conflict: guest application toolbox-dnd tried to register, but it is still registered on channel 1
Oct 27 09:19:27.024: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:19:27.024: vcpu-0| GuestRpc: Channel 2 reinitialized.
Oct 27 09:20:33.433: vcpu-0| CPT current = 0, requesting 1
Oct 27 09:20:33.433: vcpu-0| Sync monModules(1).
Oct 27 09:20:33.434: vcpu-0| E1000: Syncing with mode 1.
Oct 27 09:20:33.434: vcpu-0| Done Sync monModules(1).
Oct 27 09:20:33.434: vmx| CPT: monitor ACKing mode 1
Oct 27 09:20:33.434: vmx| Destroying virtual dev for scsi0:0 vscsi=8198
Oct 27 09:20:33.434: vmx| VMMon_VSCSIStopVports: No such target on adapter
Oct 27 09:20:33.514: vmx| DISKLIB-VMFS : "/vmfs/volumes/4aae5176-4f8b1d32-51a4-001d09fd4614/corp1101/corp1101-flat.vmdk" : closed.
Oct 27 09:20:33.514: vmx| CPT current = 1, requesting 2
Oct 27 09:20:33.514: vmx| CPT: monitor ACKing mode 2
Oct 27 09:20:33.522: vmx| VMXVmdb_LoadRawConfig: Loading raw config
Oct 27 09:20:33.533: vmx| CPT current = 2, requesting 6
Oct 27 09:20:33.533: vmx| Checkpoint_Unstun: vm stopped for 99795 us
Oct 27 09:20:33.533: vcpu-0| Sync monModules(6).
Oct 27 09:20:33.533: vcpu-0| LSI:Telling vmk to set async to 1(CONT_SYNC)
Oct 27 09:20:33.533: vcpu-0| E1000: Syncing with mode 6.
Oct 27 09:20:33.534: vcpu-0| Done Sync monModules(6).
Oct 27 09:20:33.534: vmx| CPT: monitor ACKing mode 6
Oct 27 09:20:33.667: vmx| DISK: OPEN scsi0:0 '/vmfs/volumes/4aae5176-4f8b1d32-51a4-001d09fd4614/corp1101/corp1101.vmdk' persistent R[]
Oct 27 09:20:33.719: vmx| DISKLIB-VMFS : "/vmfs/volumes/4aae5176-4f8b1d32-51a4-001d09fd4614/corp1101/corp1101-flat.vmdk" : open successful (10) size = 42949672960, hd = 196640. Type 3
Oct 27 09:20:33.719: vmx| DISKLIB-DSCPTR: Opened : "corp1101-flat.vmdk" (0xa)
Oct 27 09:20:33.719: vmx| DISKLIB-LINK : Opened '/vmfs/volumes/4aae5176-4f8b1d32-51a4-001d09fd4614/corp1101/corp1101.vmdk' (0xa): vmfs, 83886080 sectors / 40 GB.
Oct 27 09:20:33.719: vmx| DISKLIB-LIB : Opened "/vmfs/volumes/4aae5176-4f8b1d32-51a4-001d09fd4614/corp1101/corp1101.vmdk" (flags 0xa).
Oct 27 09:20:33.719: vmx| DISK: OPEN '/vmfs/volumes/4aae5176-4f8b1d32-51a4-001d09fd4614/corp1101/corp1101.vmdk' Geo (5221/255/63) BIOS Geo (0/0/0)
Oct 27 09:20:33.720: vmx| Creating virtual dev for scsi0:0
Oct 27 09:20:33.720: vmx| DumpDiskInfo: scsi0:0 createType=11, capacity = 83886080, numLinks = 1, allocationType = 1
Oct 27 09:20:33.721: vmx| SCSIDiskESXPopulateVDevDesc: Using FS backend
Oct 27 09:20:33.791: vmx| Powering off Ethernet0
Oct 27 09:20:33.792: vmx| Hot removal done.
