Here is something i believe is a bug on both 9110 & 9210.
Nokia 9x10 users when trying to establish L2TP tunnels through our Network Access Servers (Cisco As5300) can't connect. (L2TP = Layer 2 Tunneling Protocol)
In particular 9x10 doesn't seem to like re-negotiation of the LCP/PPP phase when "jumping" from router LAC (L2TP Access Server) to router LNS (L2TP Network Server), so i suppose there must a bug in the ppp implementation.
Is there a way i can fix it?