I'm using an RB450G as a router and an Access Point running dd-wrt (broadcom). I've setup the AP so that I have guest wireless tagged with VLAN4. Be default these newer broadcom routers have VLAN1 as the internal VLAN (and I can't seem to change that).

The VLANs are trunked to the RB450G and I have a hotspot running on VLAN4 (the guest network). That works perfectly. I can also get a hotspot going on VLAN1 if I want to but my goal is to either bridge VLAN1 with the existing main interface on the router or to change it treat it like default VLAN.

Rather than presenting the dozens of different ways I've tried to this using either the switch chip or interfaces and bridges I was hoping to get some advice as to whether this is even possible and what approach I should take.

Thanks in advance.

Just thought I'd bump this to see if anyone had any suggestions to share - Thanks!

From the sounds of it you are trying to achieve exactly the same thing that I am, but I've only just started.

Did you get to a resolution yet?

Nope. No resolution yet. I've given up. Not worth the trouble.