1. Is there a upper limit on the number of bridges and/or taps and if
so what is it?

The if_index field for an interface is 16 bits so I guess there may be an upper bound of 64K. That might start to stretch limits of FreeBSD in other areas.

2. Does each tap need a corresponding bridge or can they all go
through the same bridge?

They can all go through the same bridge if that's what you want (the same broadcoast domain).


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