I have bridged OPT2 with OPT1, but for some reason none of my packet rules
are taking effect.  I have enabled "Enable filtering bridge" under the
advanced settings but this doesn't seem to do anything.  I have a rule on
OPT2 that says drop all traffic, yet all traffic is still being passed.
Have I mis-understood how to work bridging?  Can someone give me any ideas?

Thanks,
Jon