Possible bug see this thread, posting on behalf of mjzglr.
As I understand it, he just got a new Linksys E2000, loaded tomato-E2000-1.28.9054MIPSR2-beta-Std and tried to set up a wireless ethernet bridge to his existing primary router is a Buffalo WHR-HP-G54 running Tomato v1.23 in G-only mode. Is using WPA2 personal with AES for security.
I tried do the same with an E2000 running the same version of firmware and an WRT54G-TM here. While the WRT54G-TM can bridge to the E2000, I was unable to establish the bridge from the E2000 to the WRT54G-TM. FYI, he also reported failure to establish such a bridge with DD-WRT. IIRC, I was also unable to WDS link them, but I'm not 100% sure of that.
So I guess the question is, can this be independently confirmed, if so is if fixable or are there any workarounds.