When is a switch not a switch?

[Patrick M. Hausen]

A short P.S.

I just looked shortly into vm-bhyve. Whatever this tool does with respect to the "switches",
possibly just turning off all the hardware acceleration features for your network card can
solve your problems without further messing around with bridge(4) and friends.

What you need to configure depends on your hardware.
I made a table for the various interfaces we use at our place:

em:		-rxcsum -txcsum -lro -vlanmtu -vlanhwcsum -vlanhwfilter -vlanhwtag up
igb:		-rxcsum -rxcsum6 -txcsum -txcsum6 -tso -vlanhwtag -vlanhwtso up
ix:		-rxcsum -rxcsum6 -txcsum -txcsum6 -tso -lro -vlanhwtag -vlanhwtso up
ixl:		-rxcsum -rxcsum6 -txcsum -txcsum6 -tso -lro -vlanhwtag -vlanhwtso up
bnxt:	-rxcsum -rxcsum6 -txcsum -txcsum6 -tso -lro -vlanhwtag -vlanhwtso -vlanhwfilter up

HTH,
Patrick
--
punkt.de GmbH
Patrick M. Hausen
.infrastructure

Kaiserallee 13a
76133 Karlsruhe

Tel. +49 721 9109500

https://infrastructure.punkt.de
info at punkt.de

AG Mannheim 108285
Geschäftsführer: Jürgen Egeling, Daniel Lienert, Fabian Stein

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