l2tp disconnect issue

When I setup remote access L2TP between Win7, iPad and a Mikrotik, l2tp drops. For example, win7 logs in via L2TP and when the iPad logs in via L2TP, my constant ping via win7 stops and the win7 l2tp disconnects but the iPad l2tp stays up. When I start back the Win7 l2tp, the iPad L2tp disconnects.

My configuration is using a ppp profile with local address = inside Mikrotik ip and remote address = pool of unused inside LAN ips (on same subnet as inside Mikrotik LAN interface.

There are two PPP Secret accounts(Win7 and iPad) using the ppp profile (with pool defined).

Also, there is an IPSec Peer 0.0.0.0/0 with generate key.

Any help would be appreciated if you have seen this issue. I am running v6.0rc14 on a 951G.

Thanks.