From: "André Marascalchi Zenun" <andre dot zenun at gmail dot com>

> Well folks, what I have here're a test topology. I'm using m0n0wall with
> PLC equipments (Powerline Communications).
> I would like to m0n0wall work with VLANs, and the LAN interface was
> configured like this, using vlan. And I don't know why now that I
> disabled VLANs I can access this web sites!

> But is weird, because I can access this sites when I connect the
> computer directly to the switch! And when connected in the PLC modem I
> don't access this web sites! But just those web sites! And just when the
> LAN interface of m0n0wall have VLAN. Without VLAN works fine! :s

> Any tip about why this is happening?

I think V-lan tagging takes space in the packet.  So drop the MTU on the 
client, and I bet it works.  Just sounds too much like an MTU problem.

                        Lee