FREEBSD between two trunks

[sferreira at comcast.net]

I'm trying to setup DUMMYNET to emulate long delays, such as those encountered in satellite links. The problem is that I have to place my freebsd host between two trunks passing vlans (2,3,4,5,6).

So the setup is:

cisco swictch trunks vlan 2,3,4,5,6 <-> freebsd <--> cisco switch trunks vlan 2,3,4,5,6


All the documents I could find  related to this subject matter has the freebsd as an endpoint and not connecting two trunks.  Also the freebsd has to be an invisible hop on the network, so it can not route this traffic.  I had setup my freebsd in bridge mode but I could not get this setup to work.