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2022-03-20T09:08:23.207950Z
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V 413
netmap: add a tunable for the maximum number of VALE switches

The new dev.netmap.max_bridges sysctl tunable can be set in
loader.conf(5) to change the default maximum number of VALE
switches that can be created. Current defaults is 8.

MFC after:	2 weeks

(cherry picked from commit dd6ab49a9aebb5fbb85973d9a859d24daa5e2165)

Git Hash:   6e142610cef3c3793b7f366d606163444dbdddf3
Git Author: vmaffione@FreeBSD.org
END