I think i understand what is happening here. Long time back i told to add 
pppd as service. But i din't explain wat exactly was happening. 

Q:-i mean pppd it's running again  
Ans:-This is bcoz it's now a service not a process if u kill it it will 
resume coz it's a service. At start up it's in disabled mode i.e. it wont 
start but in this approach the service is started from the RIL library.

Q:- i am running pppd from init.rc only,then how can i run it? you mean 
again can i run manually  pppd? 
Ans:- Yes, and no need for the loong command. It's a service stop the 
service and start the service.

My guess:-
This approach is that by adding pppd as service u have the option of 
enabling it or disabling at will from inside the RIL library code itself. 
So it again traces back to RIL lib code. U r enabling the service from RIL 
but failed to disable the service when required and so it's not dying. This 
is the drawback of using this method . U never now where the problem 
occurs. So as u r using this, add extra log lines everywhere so that u hav 
better idea of what is happening bcoz the stock defalut log lines only give 
u a vague idea. Give a RIL link for better help. 

On Thursday, 11 October 2012 16:46:39 UTC+5:30, venkat k raju wrote:
>
>
> Dear all,
>
> i am working with Gingerbread-2.3.4 , i have integrated gprs to ril 
> android default stack.
>
> here i am facing problem with resuming the data connection , once if i 
> disable it
>
> note :
>
> if i disable the data connection option from GUI my pppd process is 
> running but ppp0 was disconnecting
>
> because this what happens if i enable the data connection option from GUI 
> my pppd not resuming it
>
>
> please anybody suggest me how to resolve this issues
>
> thanks&Regards
> k.v.raju
>

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