[Bug 264198] bridge, ipfw: very slow network on bridge with IPFW, virtio or vtnet on 12.3-RELEASE-p5

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 25 May 2022 10:20:24 UTC

--- Comment #7 from punkt.de Hosting Team <mops@punkt.de> ---
First, if vtnet0 is a member of bridge0, you must remove the IP address
configuration from vtnet0 and only configure it "up", then put the IP address
on bridge0.
Mandatory - documented in the FreeBSD handbook, chapter on bridging.

Second, could you try

  ifconfig vtnet0 -rxcsum -txcsum

please and test if that changes anything?

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