[Bug 242894] bhyve: TCP / network disconnections between 12.0-RELEASE (guest) and 12.1-RELEASE (hypervisor)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242894

--- Comment #5 from Jason Tubnor <jason at tubnor.net> ---
(In reply to IPTRACE from comment #3)

If it is the igb interface and you are using VLANs, I had to disable VLAN
Hardware Tagging (-vlanhwtag) on a 12.1 host to allow full use of the physical
interface speed for the guest.  There appears to be a bug in the driver.

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