VirtualBox 6.0 Released

[Mohammad.Poorya]

VirtualBox 6.1.20 Build 143896

Changes in VirtualBox 6.1.20 (2021-04-20):

• VMM: Fixed extremely poor VM performance depending on the timing of various actions (regression in 6.1.0)
  
• VMM: Fixed guest OS hanging under certain circumstances when Hyper-V is present
  
• VMM: Fixed Guru Meditation error when using a nested hypervisor under certain circumstances
  
• VMM: Fixed a SMAP related host panic affecting Solaris 11.4 systems with Intel Haswell CPUs or later
  
• OCI: Add cloud-init support for export to OCI and for OCI instance creation
  
• GUI: Fixed “Delete all files” leaving behind Logs/VBoxUI.log
  
• Audio: Multiple fixes and enhancements
  
• Audio: Fixed detection of duplex audio devices on macOS (5.0 regression;)
  
• Network: Fixed link status reporting for “not attached” adapters
  
• Network: Fixed connectivity issues with e1000 in OS/2 guests (6.1.18 regression; bug #20148)
  
• Network: Fixed VxWorks e1000 driver compatibility issue (bug #20182)
  
• Network: Fixed GUI checks for port forwarding rules rejecting IPv6 with “Nat Network” (bug #14847)
  
• DHCP: Don’t crash in the presence of fixed address assignments (bug #20128)
  
• Serial: Fixed possible VM hang when using the a serial port in disconnected mode (bug #19854)
  
• Webcam: Fixed interoperability with v4l2loopback and fixed a crash under certain circumstances (bug #20176)
  
• NVMe: Fixed sporadic Windows VM hang or reboot on high CPU load
  
• VBoxManage: Allow changing network adapter attachment of a saved VM with “modifyvm”
  
• vboximg-mount: Fix for argument processing to honor the ‘–root’ option (6.0 regression; bug #20073)
  
• Linux host and guest: Support kernel versions 5.11 (bug #20198) and 5.12
  
• Linux host: Maximum MTU size increased to 16110 for host-only adapters on Linux kernels 4.10+ (bug #19122)
  
• Linux Guest Additions: Fix vboxvideo module compilation for kernel version 5.10.x
  
• Linux Guest Additions: Fixed kernel module build for RHEL 8.4 beta and CentOS Stream (bug #20289)
  
  

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