[Bug 254366] Severe IPv6 TCP transfer issues on 13.0-RC2 with virtio network adapter

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254366

--- Comment #9 from Michael Tratz <michael at esosoft.com> ---
I guess so too. That's why also

ifconfig vtnet0 -tso6

brings back acceptable speeds. But without the TSO the vm-to-vm throughput on
the same host is not anywhere near IPv4 or what it was on FreeBSD 12 for IPv6.

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