This is a maintenance release. The following items were fixed and/or added:
- Nested VM: Fixed hangs when executing SMP nested-guests under certain conditions on Intel hosts (bug #19315, #19561)
- OCI integration: Cloud Instance parameters parsing is improved on import (bug #19156)
- Network: UDP checksum offloading in e1000 no longer produces zero checksums (bug #19930)
- Network: Fixed Host-Only Ethernet Adapter DHCP, guest os can not get IP on host resume (bug #19620)
- NAT: Fixed mss parameter handing (bug #15256)
- macOS host: Multiple optimizations for BigSur
- Audio: Fixed issues with audio playback after host goes to sleep (bug #18594)
- Documentation: Some content touch-up and table formatting fixes
- Linux host and guest: Support kernel version 5.10 (bug #20055)
- Solaris host: Fix regression breaking VGA text mode since version 6.1.0
- Guest Additions: Fixed a build failure affecting CentOS 8.2-2004 and later (bug #20091)
- Guest Additions: Fixed a build failure affecting Linux kernels 3.2.0 through 3.2.50 (bug #20006)
- Guest Additions: Fixed a VM segfault on copy with shared clipboard with X11 (bug #19226)
- Shared Folder: Fixed error with remounting on Linux guests
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