yeah that looks more sensible... not sure where you got the 'internet' port name (or 'ethernet1' maybe that is normal on that device)
should look more like
config device
option name 'br-internet'
option type 'bridge'
list ports 'lan1'
list ports 'ethx.x'
config interface 'wan'
option proto 'none' #you probably want proto here
option device 'br-internet'