Yeah i got the same thing too. My friend just can't send me aid.
We both are from Singapore.
In Singapore we have 4 different ISP. Starhub, Singnet, Pacnet, M1.
My friend and I are using the same ISP, starhub.
Starhub is a shared bandwith broadband, the number of IPs getting rotated around is little.
Thus, my friend is not able to aid me.
I hope there will be some solutions to this problem.