known issues about the GPRS software or driver

Hi,

i'm wondering if someone has a list of problems regarding the GPRS connection on uClinux with Nios2.

What i mean is that i'm looking for well known problems on :

• the ppp module provided by the kernel

• the pppd deamon

• the chat program which controls the modem

• problems when the ppp0 interface is set up or down

• problems encountered when the ppp0 interface is up (packets routing and so on...)

I know they are not very specific questions, but i need some answer in order understand what is going wrong on my board.

Thanks in advance.

Regards,

--Luca