@C_Otto side question for those of us who develop node managment tools: did lnd also add/update a lncli/rest api so we can check if the feature is supported and enabled by the node, or do we have to rely on lnd version for now?
It's part of the new proto file released with lnd v0.18, with additional parameters for updatechanpolicy in lncli and the APIs. I don't see the reason, but you could check the existence of these parameters if you don't know the version of lnd itself.