SonicWall and PPPoE

Anyone connecting a SonicWall NSA 250 to a Mikrotik PPPoE server? Any tweaks to make it work right?

Not that I have the answer to your question, but we had intermittent sudden disconnects & refusals to connect on SonicWALL TZ series hardware, several different models. We wound up giving up on them and switching to Static IPs.