currently, -edge has CONFIG_SMB_SERVER=y (since 5.15), and is missing CONFIG_SMB_SERVER_SMBDIRECT. -lts is missing both of these.
it would be nice to have both options set for both -lts and -edge. someone on irc was asking for it as they are running an smb server with it (on edge instead of alpine-3.15), and the functionality seems to be fine
this can also be deferred until more patches make it into stable for any outstanding bugs