transactions for the client, then the transaction number for the last
such committed transaction is put in the 'pb_last_committed' field.
-In a connection request the operation is not file system modifying, so
-the 'pb_transno' value will be zero in the reply as well.
+In a connection request the operation does not modify the filesystem,
+so the 'pb_transno' value will be zero in the reply as well.
fixme: there is still some work to be done about how the fields are
managed.